That’s not a bad idea.. he said he used Autocad and there was no entity in the files so I have downloaded the free trial to see if I can fathom it out.
Lathe to remove weight from the gears sounds like a good plan. It's not the most efficient in terms of strength-to-weight ratio but it does mean you keep
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From Sketchup to waterjet cutting at K-cut help
Export in polylines!
Shakey Today, 06:01I flatten the plates to just be the profile of them (ie 2D of every plate) and export as dxf in polylines. Polyfaces