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Okay, thanks everyone for the thoughts, this is awesome! I think I'll go ahead with getting 5-40 gear at least the next few projects. @Richard Hed Thanks for the link. Any chance you've used there reamers? those rates also seem pretty good.

Well it's been a good long time since this was posted, but I do now have the first part to show! The frames (2+ a spare) are finished, except for the oiling hole. The pivot pins are also done, but I may end up re-making those. One question I have is what people think of 5-40 threads these...

If you have a Solidworks background then Onshape could be worth checking out. It's a free web-based cad solution from the same core team as Solidworks, and with a lot of the same interface and feature set (you'll find yourself missing advanced features occasionally, but on the other hand it has...

That's a really slick looking project, and the thread seems like a gold mine. Definitely going on my to-build list. Edit: What's that air connection you are using? I've been looking for something small enough to fit / look good on the build.

Hi All, A friend (who might jump in at some point) and I are are going to build a wobbler together. We'll each make 2 of our respective parts and then get together some time next month to do the assembly. This is both of our first build so it should be an adventure :-). To kick things off...

Hi All, I've always been fascinated by miniature engines and now that I'm through undergrad (and have access to a shop), it's time to build some! I plan to kick things off with an Elmer 25 wobbler, and then go from there (maybe a beam engine next, I'm not sure what would be an appropriate...