Half of a Great Idea

Inheritance Machining
10 May 202426:34

Summary

TLDRIn this engaging video, Brandon, a skilled machinist, embarks on a project to create a 'Eureka' tool, which is a form-relieving tool designed to cut gears. Despite having experience in machining, gears have been one of the few areas he has yet to explore. The video documents his journey from conceptualization to the initial stages of the build, including the creation of an indexing sleeve and other components from materials like 4140 steel and bronze. Brandon's meticulous attention to detail, coupled with his humorous interaction with his partner, makes for an entertaining and informative watch. The video concludes with a teaser for part two, where he plans to complete the tool and demonstrate its functionality, promising viewers a satisfying 'Eureka' moment.

Takeaways

  • 🔩 Brandon, the host, has avoided working with gears in his shop despite having experience in machining.
  • 💡 He decides to create a tool called the 'Eureka' to make gear cutters, which will then be used to make gears.
  • 🛠️ Gear cutters are expensive, and Brandon prefers making tools over buying them, which motivates him to create his own solution.
  • ⚙️ The process involves understanding involute geometry, which is essential for cutting the teeth of gears.
  • 🔨 Brandon uses a variety of tools and machinery, such as a lathe and mill, to create the different components of the Eureka tool.
  • 📏 A precise measurement and attention to detail are crucial throughout the machining process to ensure the parts fit and function correctly.
  • 🛍️ Henson Shaving is mentioned as a sponsor, and their safety razor is highlighted for its quality and design.
  • 🔩 The indexing sleeve, a short round bit, is an essential part of the Eureka tool and is made from a lengthy piece of 4140 steel.
  • 🔨 Brandon faces challenges and makes mistakes during the build, but he finds solutions and continues to progress.
  • 🔩 The final product is not just functional but also visually appealing, with chamfers and clean lines that showcase Brandon's craftsmanship.
  • 🔧 The Eureka tool is only half completed in the video, with more components to be made in the continuation of the project.

Q & A

  • What is the main topic of the video?

    -The main topic of the video is the process of creating a tool called the Eureka, which is used to make gear cutters and eventually gears.

  • Why does Brandon consider himself a 'noob' when it comes to gears?

    -Brandon considers himself a 'noob' because, despite having used gears and knowing some engineering jargon, he has never actually made one in his two years in the shop.

  • What is the Eureka tool designed to do?

    -The Eureka tool is designed to be a form-relieving tool that cuts the relief on the back of the gear cutters.

  • Why does Brandon decide to make the Eureka tool instead of buying a gear cutter?

    -Brandon decides to make the Eureka tool because gear cutters are expensive, and he prefers making tools rather than buying them.

  • What is the term used to describe the geometry used in cutting gears?

    -The term used to describe the geometry used in cutting gears is 'involute geometry'.

  • What is the purpose of the indexing sleeve in the process?

    -The indexing sleeve is a short round bit used to ensure the correct positioning and alignment of the parts during the machining process.

  • Why does Brandon use a collet block for making the notches on the tool?

    -Brandon uses a collet block to keep the process simple and avoid the complex setup required by a rotary table for making the notches.

  • What material is used for the fastening bits in the tool?

    -The fastening bits are made out of bronze, chosen for its aesthetic appeal.

  • What is the purpose of the anchor plate in the Eureka tool?

    -The anchor plate is a component that provides stability and serves as a base for attaching and positioning other parts of the tool.

  • How does Brandon ensure the parts he is machining are held securely in place?

    -Brandon uses various clamping methods, such as using a live center and a chuck, to ensure the parts are held securely and do not move during machining.

  • What is the final step Brandon takes in assembling the Eureka tool before testing it?

    -The final step is inserting a spring, which is essential for the ratchet mechanism to function and produce the clicking noises.

Outlines

00:00

🔧 Introduction to Gear Making and the Eureka Tool

Brandon introduces the concept of gears, which he has not worked with extensively despite his experience in the shop. He expresses his novice status on the topic but is eager to learn. Gear cutters are mentioned as being expensive, and Brandon shares his preference for making tools rather than buying them. He decides to create a tool called the 'Eureka' to make gear cutters, which in turn will be used to make gears. The process involves understanding involute geometry and using a form-relieving tool to cut gears. Brandon also humorously discusses the design process, indicating that he is using an existing design for the Eureka tool.

05:02

🎥 Henson Shaving Sponsorship and Tool Design

The video includes a sponsorship message for Henson Shaving, which provides high-quality safety razors. Brandon praises the precision and design of Henson's razors, mentioning their use of aerospace engineering techniques. He also jokes about the potential for injuries in the shop and how using a safety razor is safer than one might think. The sponsorship offer includes a discount code for the viewers. Returning to the project, Brandon discusses the design of the Eureka tool, which he didn't have to create himself, and his satisfaction with its existing design. He also talks about the complexity of the tool and the process of making gears, including the necessity of creating a tool to make the gear cutters.

10:08

💣 Machining the Indexing Sleeve and Fastening Bits

The paragraph details the process of creating an indexing sleeve from a piece of 4140 steel. Brandon uses a lathe to turn and shape the sleeve, employing various techniques to ensure accuracy in dimensions. He also discusses a method for efficiently turning multiple diameters using the lathe's digital readout (DRO). After shaping the sleeve, he moves on to creating fastening bits out of bronze, which involves turning, boring, and threading the pieces. Brandon uses a collet block and a dovetail cutter to create notches on the indexing sleeve and adds wrench flats and a spotface for assembly purposes.

15:08

🔩 Working on the Anchor Plate and Additional Components

Brandon proceeds to work on the anchor plate, which involves drilling, reaming, milling slots, and boring holes for various components. He uses a rotary table for some operations and emphasizes the importance of accurate measurements and setups. The paragraph also covers the creation of a ring and a nut from bronze, detailing the process of turning, threading, and chamfering. A makeshift mandrel is used to hold the ring for further processing, and the nut receives wrench flats and a set screw hole. The assembly and fitting of the components are discussed, highlighting the use of a spotface for a set screw and the aesthetic appeal of the bronze material.

20:10

⚙️ Ratchet Paw and Spring Mechanism Assembly

The focus shifts to the creation of the ratchet paw mechanism, which involves milling and drilling precise holes and curves on a piece of A2 tool steel. Brandon uses a rotary table for angular cuts and curves, and despite encountering a mishap with the first attempt, he manages to rectify the issue with a new piece of stock. He then moves on to making a shoulder screw for the ratchet paw, which requires different diameters for the head, shoulder, and threaded section. The screw is made using a clutch die holder and a rotary broach. A spring is created from a plate and spring wire, with the final assembly incorporating screws and a dowel pin. The paragraph concludes with the successful assembly and testing of the ratchet mechanism, producing satisfying clicking noises.

25:11

🔩 Final Assembly and Anticipation of Part Two

In the final paragraph, Brandon puts the finishing touches on the ratchet mechanism, ensuring that all components are assembled correctly and function as intended. He presents the completed part to his partner, who admires the craftsmanship and functionality. They discuss the aesthetics and features of the tool, including the notches, wrench flats, and the overall appearance. Brandon reflects on the progress made so far, noting that the tool looks good and operates smoothly but acknowledges that there is more work to be done in part two of the project. The video ends with a teaser for the continuation of the build, where the tool's utility will be demonstrated, and a humorous exchange between Brandon and his partner.

Mindmap

Keywords

💡Gears

Gears are mechanical components that transmit torque and rotation from one part of a machine to another through the engagement of toothed wheels or pinions. In the video, gears are a central theme as the creator discusses his lack of experience with them and his intention to make gear cutters to eventually create gears himself.

💡Gear Cutters

Gear cutters are specialized tools used to shape gears from raw material, typically through a process called hobbing or shaping. In the script, the creator expresses the expense of purchasing gear cutters and his preference to make his own, which becomes a significant part of his project.

💡Involute Geometry

Involute geometry is a type of curve used in the design of gears and is characterized by its property that the gear teeth can mesh without producing impact or discontinuous motion. The video mentions this concept as the creator discusses the design of his gear-cutting tool.

💡Eureka Tool

The Eureka tool, as mentioned in the script, is a form-relieving tool that the creator plans to make. It is designed to cut the relief on the back of gear cutters. The name 'Eureka' signifies a moment of discovery or realization, which is fitting for the creator's process of learning and making.

💡Indexing Sleeve

An indexing sleeve is a round bit used in machinery to secure and align parts for precise operation. In the video, the creator makes an indexing sleeve as part of the process to create the Eureka tool, showing its importance in the overall project.

💡Ratchet Mechanism

A ratchet mechanism is a device that allows motion in one direction only, typically through a toothed wheel engaging with a pawl or click. The script describes the creation of a ratchet mechanism, which is a key component in the tool the creator is building.

💡Chamfer

A chamfer is a beveled edge or corner on an object, created to make it easier to handle or to remove any sharp edges. The video script frequently mentions chamfering as a finishing step in the creation of various parts of the tool.

💡Thread Cutting

Thread cutting is the process of creating screw threads on a cylindrical object, such as a bolt or a nut. In the script, the creator discusses cutting threads on various components, which is essential for assembly and functionality of the tool.

💡Rotary Table

A rotary table is a device used in machining to hold and rotate a workpiece for circular interpolation or positioning at precise angles. The video's creator uses a rotary table to perform complex milling operations on the parts he's creating.

💡Spring

A spring is a flexible object that stores energy when deformed and releases it to return to its original shape. In the context of the video, the creator makes a spring as a component of the ratchet mechanism, which is crucial for the tool's functionality.

💡Milling

Milling is the process of cutting, shaping, or planing using a rotating milling cutter with multiple cutting edges. The script describes various milling operations, such as slot milling and face milling, which are essential for shaping the parts of the tool.

Highlights

Brandon discusses his unfamiliarity with gears and his plan to create a tool to make gear cutters.

Introduces the Eureka tool, a form-relieving tool designed to cut gears.

Brandon shares his preference for making tools rather than buying them and the process of creating the Eureka tool.

Explanation of the involute geometry used in gear cutting.

Use of 4140 steel for the indexing sleeve and tips on efficient turning of diameters.

Henson Shaving's sponsorship and the features of their precision-engineered safety razor.

Brandon's humorous interaction with his partner about his new look and a literature reference.

The process of creating the anchor plate with precise hole locations and milling operations.

Use of a rotary table for complex milling operations and the importance of setup accuracy.

Fabrication of the ratchet paw component with careful attention to detail and precision.

Brandon's realization of a mistake in the milling process and his decision to start over with a new piece of stock.

Assembly and testing of the ratcheting mechanism, resulting in satisfying clicking noises.

Introduction of a spring made from spring wire to complete the ratcheting mechanism.

Final assembly of the tool, showcasing its functionality and aesthetic appeal.

Brandon's humorous banter with his partner about the tool's progress and the remaining work.

Reflection on the project's progress and anticipation for part two where the tool will be completed and used.

Lighthearted conversation at the end of the video, indicating the long hours and effort put into the project.

Transcripts

00:01

- [Brandon] Gears.

00:02

(gears popping)

00:03

One of the fundamentals in machining

00:04

that I've somehow managed to completely avoid

00:06

in over two years in this shop.

00:08

It's not that I'm afraid of them,

00:09

I've just never had a need for them, I guess.

00:12

So I'm a bit of a noob on the topic.

00:14

I mean, I've used them,

00:15

and I even know some engineering jargon,

00:17

but I've never made one.

00:19

Seems like a simple enough problem to solve.

00:21

But gear cutters are expensive.

00:23

And there's another problem.

00:24

I like making tools more than not tools.

00:27

So I'm gonna be making a tool

00:29

to make gear cutters to make gears.

00:32

I'm gonna make the Eureka.

00:34

(bright gentle guitar music)

01:00

Okay. - I think that's nice framing.

01:02

- I don't know, you tell me.

01:03

I can't see it.

01:04

- [Partner] I said I think it's nice framing.

01:05

- Oh, okay. (laughing)

01:07

- I am making the Eureka tool. - Eureka!

01:10

(Brandon laughing)

01:12

- I need to make some gears.

01:13

- [Partner] Why?

01:14

- Because...

01:17

(Both laughing)

01:18

Because gears are like one of the last things,

01:20

basic things, I haven't done.

01:22

I need to make gear cutters.

01:24

- Gear cutters? - Right.

01:26

- [Partner] But I thought we were making gears.

01:27

- You need gear cutters to make gears.

01:30

- [Partner] An actual thing?

01:30

- This is not a gear cutter,

01:32

but it's similar to a gear cutter

01:33

and there's all these teeth, right?

01:35

And so the idea is that you would spin this

01:37

and you could cut each tooth one at a time around a gear.

01:40

It's called involute geometry.

01:42

- Involute. - Involute.

01:44

- Not invalid? - Not invalid.

01:45

- [Partner] Is there any reason that

01:47

the thing that makes gears happens to look like a gear?

01:49

- It's not quite the chicken and the egg.

01:51

It's more like, like the chicken feed

01:52

and then the chicken and then the egg.

01:54

(partner laughing)

01:55

So what I'm making is the Eureka tool,

01:57

which is a form-relieving tool, to cut gears.

02:00

This whole thing, all it does is cut the relief

02:03

on the back of the gear cutters.

02:06

Are you impressed?

02:07

- So impressed. - You look so impressed.

02:09

- [Partner] Okay, so we're gonna make a tool

02:10

that does something cool,

02:11

and while it's doing something cool it looks cool.

02:13

And I have the...

02:15

I should flip to the right page.

02:17

So I didn't have to design it.

02:18

- [Partner] Didn't you wanna design this?

02:20

- Not this one.

02:21

There are other things I wanna design,

02:22

but I like that this one is already designed

02:24

so that I don't have to design it.

02:25

I don't think I can get it all done in this video.

02:28

I wouldn't wanna get to the end of making this build

02:31

and then not have time to actually make the gears.

02:35

No, to make gear cutters, 'cause...

02:37

So, here's the deal.

02:39

I gotta make this tool, which is very complicated,

02:41

and then I gotta make a cutting tool

02:43

to make gear cutting tools.

02:44

Once I make the gear cutters, I can make gears, maybe.

02:49

There's still a maybe in there. (laughing)

02:50

- [Partner] If you give a machinist a cookie?

02:52

- I don't know what that means, but I'll take the cookie.

02:54

I'm terrible with literature references and-

02:56

- [Partner] That's a kid's book, my love.

02:58

- Like I said, literature reference.

03:00

What book is it?

03:01

- [Partner] "If You Give a Mouse a Cookie." (laughing)

03:03

- You're not gonna understand what this thing does

03:05

and how it's moving and what it's doing

03:07

until it's all together.

03:08

But there is sort of like a subassembly.

03:09

That subassembly will potentially

03:12

make some spinning and clicking noises.

03:14

So that's my goal is to at least have-

03:16

Okay, enough learning.

03:17

You can do that on your own time.

03:19

Let's actually make something.

03:21

First is a short round bit called the indexing sleeve.

03:24

A perfect use for this lengthy piece of 4140.

03:28

Not the most ideal setup for a short part,

03:30

but a little hell from the tail stock and we're good to go.

03:33

I also just didn't wanna spend forever

03:34

cutting this down on the band saw.

03:38

Not a ton of super interesting stuff happening here,

03:40

so here's a tip.

03:42

When turning a bunch of diameters and setups like this,

03:44

I like to zero the DRO, take a light pass,

03:46

and then measure that diameter.

03:48

Then get the tool out of the way

03:49

and run the cross slide in

03:50

until the DRO reads the same value and zero again.

03:54

Now, when I back out, the DRO is reading the true dimension,

03:57

making it so much easier to whip through all the diameters.

04:00

But that won't save you from vicious attacks

04:01

from the razor spaghetti.

04:03

Speaking of razors, I think I'm due for a new look.

04:06

Luckily I have Henson Shaving to help.

04:08

Unlike these murder noodles,

04:10

Henson Shaving makes razors designed to cut your hair,

04:12

but not you.

04:13

I'll get more injuries cleaning up the shop

04:15

than I will from this safety razor.

04:17

And despite what most people think,

04:18

safety razors are not harder to use or more dangerous

04:21

than the standard plastic multi-blade razors

04:23

you find at the grocery store.

04:25

When actual aerospace engineers are doing the designing,

04:27

you get a CNC machine razor

04:29

made to space station level tolerances, literally.

04:32

Before Henson got into making razors,

04:34

they made stuff like the ISS and the Mars Rover.

04:37

So the AL 13 has features

04:38

that you won't find on any other competitor,

04:40

like the wide open channels that just don't clog up,

04:43

or the unique locating pins that better position the blades

04:46

so you can be sure it doesn't reach out and poke you,

04:48

or the handle that threads against a Nitronic 60 bushing

04:51

to give a smooth and repeatable stopping point.

04:54

And of course, the cutting edge of the blade

04:55

is supported way better than any other.

04:57

So you and whoever kisses your mug every day

04:59

will be happy to say sayonara to your razor burn.

05:02

So skip the plastic, the proprietary cartridges,

05:04

the packaging, and the shipping costs

05:06

of monthly savings subscriptions.

05:08

Henson Shaving is here for you

05:09

with the best and last razor you'll ever have to buy.

05:12

Thanks to Henson Shaving for sponsoring this video

05:14

and providing you, my viewers, 100 free blade refills

05:17

if you use the code INHERITANCE

05:18

at hensonshaving.com/inheritance

05:20

or click the link in my description.

05:22

Now, I think you know what's coming next.

05:25

- You ready? - Mm.

05:28

- No way.

05:29

- [Partner] Wow. (laughing)

05:31

Hi.

05:32

Actually looks really good on you.

05:33

I really like it.

05:35

- Supposed to be the Tarzan's dad.

05:37

Problem is I don't have enough thickness to fill it out,

05:40

so I just look like a- - You have enough thickness

05:40

in other regions to fill anything out, though.

05:43

- I feel like the guy from, what's that movie?

05:46

That show, "Blackbird."

05:47

- The serial killer? - The serial killer

05:49

in "Blackbird."

05:49

I kept just kinda like ee, ee, ee, ee, ee, ee.

05:52

- [Partner] That's a nice chamfer.

05:53

(Brandon laughing)

05:54

That really doesn't...

05:55

Why doesn't that offend me?

05:56

I feel like should- - It's 'cause-

05:57

- Offend me more. - Miss Victoria mommy

05:59

over there likes (indistinct).

06:02

- You will never watch "Pride and Prejudice" with me ever?

06:05

- No.

06:05

So you like it? - I do.

06:08

- It's gettin' hot in here, oof.

06:09

I figured this one you would either,

06:10

you would love it or you would be disgusted by it.

06:13

- [Partner] It's following the trend line

06:14

of I like more facial hair as opposed to less.

06:16

- Yeah, yeah.

06:18

Well, I certainly wasn't expecting that response.

06:20

There might be another hot date in the cards for me.

06:22

Until then, let's get back to work.

06:25

Unless you have a well-seasoned dicrometer,

06:27

you probably can't tell these diameters aren't finished.

06:30

I've left everything about 20 thou larger

06:31

for some finishing passes I'll get to shortly.

06:34

I've got some work to do on the other end.

06:36

So back in the four jaw to true it up

06:37

and then facing this down to its final length.

06:41

(machine whirring)

06:47

Now everyone knows a good indexing sleeve has a hole in it.

06:49

And as you can see, this one's missing its beauty mark.

06:52

So that's next.

06:53

(machine whirring)

06:59

And I'm afraid it gets a little boring here for a second.

07:03

(machine whirring)

07:17

Still awake?

07:18

Good.

07:19

As a reward, let's do something more interesting.

07:22

With all the metal I just removed from the inside,

07:24

things are likely warped

07:25

and now the outside is no longer true to the inside.

07:28

And you can bet your buttered bench vise I want it to be.

07:30

So we're gonna hold this between centers for the final cuts.

07:34

I'll mount the first center in the chuck

07:35

and take a pass to true it up.

07:37

(machine whirring)

07:40

Then I can pop my sleeve between it and the live center

07:42

and squeeze the begeez out of it.

07:44

Emphasis on the begeez.

07:45

Friction is all that's gonna

07:46

keep this part spinning with the lathe,

07:48

so this needs to be tight.

07:50

(machine whirring)

07:57

One last turning op is a thread on this end,

08:00

but I've got myself a little pickle here.

08:02

That ain't gonna fit.

08:03

And while these words are enough to raise

08:05

the self-esteem of even the smallest gherkin,

08:07

it doesn't help me.

08:08

So, let's fix that.

08:17

(machine whirring)

08:26

That oughta do it.

08:27

Now these threads should be a cinch to cut.

08:34

(machine whirring)

08:38

(skull quacking)

08:39

Ah, dammit.

08:41

I guess I wasn't heavy enough with the begeez.

08:44

I shouldn't be able to turn the part by hand like this.

08:46

Maybe it came loose

08:47

or the contact point with the center wore out a bit.

08:50

Whatever the case, there's no way this can be

08:52

the first donation to the new box of shame.

08:54

So I'll give this a gronk and another go.

09:00

(machine whirring)

09:03

I didn't get very deep before that little hiccup,

09:05

but I'm still gonna try and pick up

09:06

where those threads left off anyway.

09:08

I can get this pretty close

09:09

by engaging the thread feed without anything spinning,

09:11

then adjust the cross feeding compound slide

09:13

until things are lined back up.

09:16

This new set of cuts should remove that little booboo

09:18

like nothing ever happened.

09:20

(machine whirring)

09:29

That's how that was supposed to go.

09:31

And even after starting at a slightly smaller diameter,

09:34

I'm able to hit the right thread dimension,

09:35

which just leaves one final job on the lathe.

09:38

The chamfers, of course.

09:40

(machine whirring)

09:46

Turned out all right, despite the blunder.

09:48

Let's finish this up on the mill.

09:50

There are 12 equally spaced notches around the outside.

09:53

Perfect job for the rotary table and chuck.

09:55

But that's a whole bunch of setup that I'm not keen to do.

09:58

So I'm gonna keep this simple

10:00

and just use the collet block.

10:07

The notches have a convenient 60-degree angle,

10:09

so a dovetail cutter is the obvious choice,

10:12

and positioning is just a matter

10:13

of getting touches on the top inside perimeters,

10:15

then lettin' her rip,

10:17

and rotating the collet block between passes.

10:19

(machine whirring)

10:37

Now you might be thinking to yourself,

10:39

won't that only make six notches?

10:41

And you would be right.

10:42

So after the first six,

10:43

I'll change how I'm clamping the block.

10:45

Then lather, rinse, and repeat.

10:47

(machine whirring)

10:57

Lastly are a pair of wrench flats,

11:00

then a final spotface that will make sense soon.

11:03

Top notch work, wouldn't you say?

11:06

Nice.

11:07

Next up are some fastening bits,

11:09

which I'm gonna make outta bronze

11:11

for no other reason than it's pretty.

11:13

This hunk already has a hole poked in it,

11:15

so that will save me from poking my own.

11:18

(machine whirring)

11:27

This first piece is just a ring.

11:29

So after facing, turning, and boring,

11:31

I'll pop some chamfers on here and part this off.

11:34

(machine whirring)

11:38

The ring isn't finished,

11:39

but I wanna go ahead and whip up the nut while I'm here.

11:41

(machine whirring)

11:52

Most nuts are threaded, and this one is no exception.

11:54

So after some chamfering, I'll switch to the thread cutter

11:57

to make some clearance at the back of this bore.

11:59

Then cut the thread to a perfect match

12:00

with the indexing sleeve.

12:11

Nailed it.

12:11

Or should I say screw...

12:13

Oh, that's why we don't say that.

12:16

Okay, anyway.

12:17

After parting this off, I'm left with two rings

12:19

that I somehow need to hold to finish up the other sides.

12:22

Luckily, I have this exquisite specimen

12:24

of high purity polymeric fixturing medium,

12:27

perfect for a quick and dirty mandrel.

12:29

(machine whirring)

12:32

I've gotten used to the razor spaghetti,

12:33

but these chaos noodles,

12:35

well, they're somethin' else.

12:36

(machine whirring)

12:47

After equal parts cutting and detangling,

12:49

the first ring presses onto the mandrel,

12:51

and then it's a simple matter of finishing the other side.

12:55

(machine whirring)

13:06

The trick now is getting this off of here.

13:09

Easy enough with a boring bar

13:10

to remove almost all the material,

13:12

and then a hammer.

13:15

After a slight modification to the mandrel,

13:17

the nut is a similar deal.

13:22

Back on the mill,

13:23

the nut gets its second most useful features,

13:25

some wrench flats.

13:27

Then a set screw hole is popped in the ring.

13:32

All right, that's two fancy bronze parts whipped up.

13:35

Let's fit them together.

13:41

The spotface I added earlier

13:42

is for a set screw that goes here.

13:45

And if you weren't aware,

13:45

if you leave candy in the shop for long enough,

13:47

it becomes hardware.

13:57

I'm gonna go ahead and say the bronze was a good choice.

14:00

Next, I'll work on the so-called anchor plate.

14:02

And looky here, the perfect piece of stock

14:04

already squared up and milled to size.

14:06

How convenient?

14:08

I guess this means we can jump right into the fun stuff.

14:11

After locating the part,

14:12

I'll spot drill a few hole locations

14:14

that really just won't make any sense until later.

14:17

So this first one is a threaded hole for a pivoty wivoty,

14:20

then a reamed hole for a pokey pudoky.

14:23

A slot is milled for the slighty glidey.

14:25

And this last hole,

14:26

that even my girthiest drill can't satisfy.

14:29

So I'll bring this guy in to settle the bore.

14:32

(machine whirring)

14:41

After a little sketchery with the boring head insert,

14:43

I can also pop some chamfers on this big guy.

14:46

Then, of course, everything else

14:47

gets this treatment as well.

14:49

(machine whirring)

15:08

Looking pretty sharp or not sharp actually.

15:10

I guess that was the point.

15:12

Okay, I'm done.

15:14

Despite my complaints before,

15:15

I can't avoid the rotary table

15:16

for this next round of operations.

15:19

And yes, I really did move this thing twice

15:21

just to get this sequence.

15:30

I am gonna start with the big honkin' radius

15:32

around this bore.

15:33

And to get it centered up, I'll use the coaxial indicator

15:36

like I did to locate the table.

15:38

Then gronk the begeez out of the clamp

15:40

so this sucker doesn't try to run away.

15:43

Now I just slapped this on here,

15:45

so there's no chance it's actually square to anything,

15:47

but it's easy enough to tram with the indicator

15:49

by rotating the table

15:51

and resetting the zeros on the perimeter scale

15:53

and the hand wheel dial.

15:54

One last thing, the book drawings

15:56

don't give much in the way of angles.

15:58

So I whipped up my own CAD drawing

16:00

to get what I needed to know.

16:02

(machine whirring)

16:10

Now I can already hear the bajillion of you

16:12

screaming at the screen

16:12

that I shouldn't be climb milling like this.

16:14

And I know I know, but I have a reason.

16:17

If something is gonna move,

16:18

I wanted to move away from the cutter

16:20

rather than get pulled in and scrap the whole part.

16:22

Fortunately, the gronking I gave the clamps

16:24

made this a non-issue.

16:26

After swapping to a finishing mill for the final pass,

16:29

I'll pop some proper sexy chamfers on here

16:31

before changing setups.

16:32

Seriously, how are chamfered rounds so satisfying?

16:36

The next setup is for this long, skinny end,

16:38

so a gauge pin helps me locate the end of the slot.

16:41

Then some more naughty, naughty, bad, bad climb milling.

16:44

(machine whirring)

16:50

At this point, most of the rest of this is just decorative.

16:53

Actually, all of this rotary table work is decorative.

16:56

This piece was technically usable

16:58

right after making the holes in the slot.

17:00

But if you thought I was gonna stop there,

17:02

you certainly haven't been around here long enough

17:03

to know the lengths I'll go to to make a nice corner round.

17:06

No matter how small.

17:08

Only downside of more setups is more chances for mistakes.

17:11

Like this little guy that I somehow miscalculated.

17:14

So back to the first setup so I can take care of that.

17:18

(machine whirring)

17:36

This looks fantastic,

17:38

this side anyway.

17:39

I still have the whole other side to chamfer.

17:42

And despite my harping on earlier,

17:43

I'm not particularly thrilled

17:44

about doing all those setups again.

17:47

Thank goodness for die grinders.

17:50

Hey, I can be pragmatic, when it's convenient, for me.

17:54

Besides hard to even tell the difference.

17:56

Now there's one last feature on this part

17:58

that I almost forgot about,

17:59

a couple of 440 threaded holes in this side.

18:02

(machine whirring)

18:08

All right, that's most of

18:09

the big hairy pieces taken care of.

18:11

So now let's work on the little hairy paws.

18:14

Not those, this.

18:15

The ratchet paw.

18:17

And you wouldn't believe it.

18:18

Another perfectly sized piece of A2 tool steel for the job.

18:21

How fortuitous.

18:24

Let's dive right into the holes.

18:26

(machine whirring)

18:33

The paw itself actually only has one,

18:35

but I need three for this to all come together.

18:37

The other two will make sense

18:38

after I counterbore this one

18:40

with none other than, you guessed it, the boring head.

18:46

(machine whirring)

18:56

Now let's make this square less so.

18:58

Another job for the rotary table.

19:07

First is a straight cut at 20 degrees

19:09

that technically doesn't need to be made

19:10

on this rotary table,

19:11

but it conveniently uses the same setup

19:13

as the first rounding operation.

19:15

And of course, I put together another quick drawing

19:17

to fill in the missing angles from the book.

19:19

Next is a job for these two,

19:21

or well now it's one and a half holes.

19:23

I milled this one away slightly,

19:25

but it will still serve the purpose of locating the parts

19:27

so I can cut the outer radius.

19:29

(machine whirring)

19:37

Mm, somethin' ain't right.

19:40

If all my math checks out,

19:41

these two curves should have blended together perfectly.

19:43

Nothing like this piece of doo doo.

19:45

But I'm now noticing that this first curve we cut

19:47

doesn't even look remotely centered

19:49

on the hole that's around.

19:50

So it seems I either boned the setup or it boned me.

19:54

Whichever the case,

19:54

I know someone who appreciates a good bone.

20:01

Okay, let's try this again.

20:02

No frickin' way.

20:04

Another prepared piece of stock.

20:06

And this one even has the holes in it.

20:08

I probably should have looked a little harder the first time

20:09

and saved myself some work.

20:11

At any rate, it means I can more or less

20:13

pick up where I left off.

20:15

And this time we'll go heavier with the clamps

20:17

and lighter with the cuts.

20:19

(machine whirring)

20:31

That's how that's supposed to look.

20:34

The last arc is the inner one,

20:36

which means clamping spots are sparse, but manageable.

20:39

(machine whirring)

20:44

All right, after a look with the old grinder,

20:46

the ratchet paw is done.

20:47

So now for its mounting screw.

20:49

I wonder if...

20:51

Yeah, it was a long shot.

20:52

I guess I'll have to make this one.

20:54

Should be a lickety split job, though.

20:57

Since the ratchet paw still needs to be able to spin,

20:59

this is gonna be a shoulder screw.

21:00

So one diameter is for the head,

21:02

a smaller one for the shoulder,

21:03

and then the last is for the knees and toes.

21:05

No wait, wrong audience.

21:07

This is for the threads.

21:09

And once again, the Hemingway tools

21:10

sent to me by my friend Eric, come in clutch.

21:13

No, literally, this clutch die holder

21:15

is perfect for making the threads.

21:17

And then this rotary broach pops a nice hex hole

21:19

in the other end of the screw.

21:20

Bada bing.

21:22

Now this just goes in here and bada boom.

21:25

Looks like I got all the dimensions spot on, too,

21:27

since this is able to spin.

21:29

So now we're just one small component away

21:31

from some glorious clicking noises.

21:33

I'm gonna need a spring, which starts with this plate.

21:36

And while it's not the finished thing,

21:37

it's at least at the right thickness.

21:40

This gets two tiny mounting screw holes.

21:42

Then I can mill it mostly to size.

21:45

I say mostly, because now I have

21:46

this little nubbins to clean up.

21:48

But just like the last small part,

21:50

work holding is a little tricky.

21:51

I can't use my normal parallels,

21:53

because they're the same thickness as the part

21:55

and I wouldn't be able to clamp them.

21:57

Luckily my late grandfather

21:58

foresaw this exact issue of mine

21:59

30 years ago when he bought these, wavy parallels.

22:03

A bit of an oxymoron,

22:04

but they're still parallel how they need to be

22:06

and will let me grab onto the thinnest of parts like this.

22:09

Pretty exciting to have just the right tool

22:11

right when you need it.

22:12

So exciting in fact that I forgot to record

22:14

milling away the nubbins.

22:16

So just enjoy the drilling of this teeny tiny hole.

22:19

(machine whirring)

22:24

All right, there it is, the spring.

22:27

What?

22:28

I mean it technically has a modulus of elasticity,

22:31

so it will do spring things,

22:32

but not at the order of magnitude I need.

22:35

Good thing I have some spring wire.

22:56

Okay, now it's a spring.

22:57

And after throwing a couple of screws

22:59

and this dowel pin in here,

23:00

we're ready to make some clicking noises.

23:03

(hammer banging)

23:34

(tool clicking)

23:35

- Oh.

23:37

(tool clicking)

23:38

Oh.

23:40

That is too good.

23:42

I know someone who will appreciate this as well.

23:44

- [Partner] Did you make something to show me?

23:46

- I made something.

23:47

It's show and tell time. - Show and tell time.

23:49

Okay. - You ready?

23:49

- [Partner] Our favorite time of the day.

23:50

- Okay. - Pretty.

23:52

- You're damn right it's pretty.

23:54

(tool clicking) - Oh.

23:55

- Uh-huh. (tool clicking)

23:57

- Oh. - Oh.

23:58

That's a proper ratchet, right?

23:59

- So you have a spring. - Yes.

24:01

- Very nice cutouts. - Yes.

24:03

- Approximately 12 of them. - They're notches.

24:05

- [Partner] Notches, two sets of wrench flats.

24:07

- Yes.

24:08

- Very nice. - Yes, very nice.

24:10

- Looks very good. - That's all I get?

24:11

- Wow! - Thank you.

24:13

- There you go. (both laughing)

24:14

You did it awesome.

24:15

- This is 50% of the way through the project.

24:18

(tool clicking) And...

24:20

Oh god.

24:21

(tool clicking)

24:23

Oh.

24:24

About this much more to make of different pieces.

24:27

Another ratcheting mechanism.

24:28

(partner gasping) So there's double ratchets.

24:30

- [Partner] Oh my gosh, we're gonna get

24:31

two clickety clicks?

24:32

- Yeah, it's gonna go chook chook chook chook chook chook.

24:34

No ball busting.

24:35

You got nothin' else?

24:36

What about this? - I hate it.

24:39

- You do hate it now? - Yes.

24:40

(both laughing)

24:41

It looks better when I cover up

24:42

the bottom half of your face.

24:43

(Brandon laughing)

24:45

- You bring out the pterodactyl in me.

24:46

- I think we're tired. - We are tired.

24:48

It's been been a long project.

24:51

- Not really. - Shut up.

24:53

- It's been a project but it has not been a-

24:55

- Shh, shh, you're interrupting.

24:57

(tool clicking) Oh.

24:58

Okay, yeah.

25:00

Okay, so it may not be a finished tool,

25:02

but I held up my end of the bargain.

25:03

It does the spinny and it does the clicky,

25:05

and it ended up looking pretty svelte in the end, too.

25:08

But I need it to do more than just look fancy

25:10

and make noises, albeit very satisfying noises.

25:14

Tools, after all, do jobs.

25:16

So stick around for part two of this build,

25:17

where if all goes well, I'll finish this bad boy,

25:20

make something with it,

25:21

and maybe even feel compelled to shout "Eureka!"

25:24

As always, thanks for watching, and see you next time.

25:27

(bright music)

25:41

Hi, sweetie.

25:42

Hi, Pookie Bear. - Ugh.

25:44

- Hi, pumpkin. - No.

25:46

Okay, so... (gasping)

25:47

I wanna see your curly Q's.

25:49

Please keep your pants on, though.

25:50

Those are a very nice color.

25:51

- A $5 chip,

25:53

'cause the bronze I used is really (censored) expensive.

25:56

(both laughing)

25:56

Well, I got this for you.

25:57

Will you come and get it?

25:58

- [Partner] You got it for me?

25:59

No, you pulled it out of the garbage for me.

26:01

I feel so special.

26:02

- Oh, I'm comin' all the way back here?

26:03

- [Partner] No, no, just a little bit.

26:05

Come forward.

26:06

- Well, when you say back that ass up...

26:08

I gotta... (mumbling)

26:10

- [Partner] This sounds like a very complicated thing

26:12

that's gonna require you to be in the shop

26:13

until 2 a.m. to complete.

26:15

- When's the last time I've been into the shop until 2 a.m.?

26:19

- 11 p.m. - So your answer to

26:21

when was the last time I've been in the shop until 2 p.m.,

26:23

your answer is 11 p.m.

26:25

- Boxy knows what I'm talkin' about.

26:27

- Technically, you were in the shop with me, so...

26:29

- And if I hadn't been, you would've been

26:30

in the shop until 2 a.m., so there.

26:31

- Yeah (mumbling) that's true.

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