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Taking on a rotary broach... but correctly this time? I don't know... I'm still convinced I had it right the first time. I just have... excuses.

Enjoy!

(video link)

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Previews only

PATREON - A Dish Best Served ROLLED

A sticky subject for me… rotary broaching. I thought I had it figured out. But maybe not. So let’s build one not from my imagination this time. #inheritancemachining #machineshop #hobbymachinist Buy this kit here (not sponsored or affiliated): https://www.hemingwaykits.com/HK2570 Patreon (Early Access + Ad Free + Drawings) - https://www.patreon.com/inheritancemachining Drawings Store - https://inheritancemachining.com/?product_tag=drawings Merch: https://inheritance-machining.myspreadshop.com/ Instagram - https://www.instagram.com/inheritancemachining/ Website - https://inheritancemachining.com/ Amazon Storefront (affiliate links): https://www.amazon.com/shop/inheritancemachining Thank you again to the Micrometer level Patreon members listed at the end of the video! TIMESTAMPS 0:00 Intro 1:06 Play Time 3:14 I tried… 6:49 Loose Ends 8:09 Shank You Very Much 11:06 This Part is Boring 13:01 PG-13 14:45 Reverse! Reverse! 17:31 Slant Touch This… 19:51 Is it drafty in here? 22:03 Baking with Brandon 24:36 And… ACTION! 26:22 Near Miss FAQ Drafting Equipment (affiliate links): https://amzn.to/3P0HvMe A/V Equipment (affiliate links): https://amzn.to/3Pi45jB Editing: Final Cut Pro X Intro Song: Way Back Way Back When (Instrumental Version) - Gamma Skies https://www.epidemicsound.com/track/SQxEhTVi9I/\ https://youtu.be/wX9IVyl0FBM © 2023 Inheritance Machining, LLC. All Rights Reserved.

Comments

Erik D. Radzius

Okay, you've got to admit that making massive tools for big machines is cool, but there's definitely a satisfaction element to making tiny tools such as this 😁 I'm aware that this will probably get limited use, but I'm a strong believer that 1) an engineer can't have too many tools 2) it makes for great viewing Additionally, the idea for sending you this one came to me after rewatching TOT's broach video. I remember watching it for the first time(now knowing that such a tool even existed back then) and being absolutely blown away. Anyway, absolute pleasure as always - glad I can contribute, and I may now go back to wondering what you're going to produce for us every 2 weeks.

Michael Faragher

I didn't know I needed this today, but I really did. Well done.

James Riordan

Why does the polygonal broach need to rotate ? Is this purely for centering purposes ? Thank you.

Inheritance Machining

Not as much for centering but more for the ease of cutting. That 1 degree angle makes it so only one corner is "working" at a time. Basically cutting the force needed by at least a factor of 6 compared to coming in straight

Inheritance Machining

Likewise! TOT's video was my first exposure. Of course I didn't have a shop at the time or know someone cool enough to send me the tool to begin with haha

Sri Ram Neravati

I think I've asked for this before but is there a discord for patreons or even non patreon users? I'd like to ask for some advice from other members on machine tools, I just finished up an internship, saved up enough to buy a mill but need some advice on what to look for when buying a used bridgeport!

Sri Ram Neravati

That playdoh explanation was the best explanation of the theory of rotary broaching! Mind blown thanks!