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Very nice, thanks for sharing! John W

Loose collet or not, that’s a mighty good looking test piece!!! Nice work, John W

Here’s a link to the 3d engine I printed. All thanks to the original poster! https://www.thingiverse.com/thing:4322206 A bit of post...

Perhaps we can collaborate on some of the printed parts for the geared engine, or maybe a group project?

I love the experimentation approach Pete! Takes me back to my early motorcycle racing days before there were “bolt on” accessories...

Thanks to everyone, I’ll get to work! John W

John, here is the spreadsheet I made years ago. A word of explanation about how it is set up: In the upper left corner, you can enter...

See: These will still work when your spreadsheet battery is flat. BALLCUT from Marv Klotz' utilities also does this. His original...

FWIW, when I used the spreadsheet I linked above, I entered my desired numbers, then printed it out. No batteries required after that! :)

Gordon, I attached a video of my PETG double acting engine on the Elmer’s gear thread, perhaps you didn’t see it? It is 100% printed...

I printed an emergency gear for my Mini Mill in PETG and it not only let me complete the part I was working on during the crash, but...

That’s it exactly! Is there any way I can have that spreadsheet? I’ve been scouring the internet for the past couple days without...

Thanks for the advice! I’m just creating a 2 5/16” ball to upgrade a trailer hitch lock for a trailer parked in an...

I haven’t printed Elmer’s geared engine yet, but I did print and build this double acting engine that is completely plastic except for a...

I can send you the STL files if you’d like. I left the mounting holes out and just drilled them according to Elmer’s plans. Drop me a...