Go to McMaster Carr and find a stock gear you like.  If they don't have one
you like then Grainger, SPD/SI or Boston Gear will

All those sites allow you to download a CAD file of the stock gear.  Of the
CAD file types "step" (or ".stp") is the most universal.

Then you use your CAD software to modify it.  Use OpenSCAD if you like but
OpenSCAD has the steepest learning curve by far of anything you will find.
It is not for casual users.   One of the direct modeling systems works
pretty much like you would in the shop where you think in terms of drilling
holes and making cuts, not in terms of programming to create geometry.

On Wed, Jun 17, 2020 at 6:23 PM Gene Heskett <[email protected]> wrote:

> Greeting all;
>
> 3d Printer is working and actually making solid parts, now I need to make
> a couple gears. with enough muscle to drive this BS-1 clone.
>
> There's a parametric gear thing I have but its a sample of many gear
> styles and I don't know how to cut it apart and use just the external
> spur piece of it. I need something that openscad can handle.  But there
> must be 1000 or more. Most proprietary so are non-starters.
>
> Thanks all.
>
> Cheers, Gene Heskett
> --
> "There are four boxes to be used in defense of liberty:
>  soap, ballot, jury, and ammo. Please use in that order."
> -Ed Howdershelt (Author)
> If we desire respect for the law, we must first make the law respectable.
>  - Louis D. Brandeis
> Genes Web page <http://geneslinuxbox.net:6309/gene>
>
>
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>


-- 

Chris Albertson
Redondo Beach, California

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