On 2018-12-16 10:54 p.m., StephenS wrote:
...
> Three of the gears I've cut from sheet metal (thirteen in total) and 
> some I've modeled.

I'll need to wait for more material to show up.

I think I should start with something easier, planetary gears (epicyclic 
gears). Then work my way up to something with more parts.

The gears are generated from a web site, 
http://hessmer.org/gears/InvoluteSpurGearBuilder.html

I download the .dxf file, feed it into the Plasma Cutter, grind some of 
the rough edges.

I model a gear tooth, from the .dxf file, into a prism{}.

Stephen S

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