Crank Handle - Atlas 7B Shaper
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This is an experimental print with limited application,but it may show some useful techniques: square + round hole for…
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- Creative Commons — Public Domain
This is an experimental print with limited application,but it may show some useful techniques: square + round hole for carriage bolt; built in "fin supports" for printing.
This is a two part print - a 1/4" x 1.5" carriage bolt and two nuts are used to fasten the two parts together.
Print instructions
There are two parts to this print - the main handle and the attached crank.
Print the main handle long side down with extra perimeters (for strength) and concentric fill. I used 30% grid infill.
The (somewhat) cylindrical crank part gave me problems with bed adhesion due to the small contact area, so I re-made the part with built in "fin" supports. Pritn with "supports from bed" and a brim, extra perimeters for strength, and 30% grid fill. As you can see in the photos, the "fin supports" simply break away after printing.
The OnShape 3D CAD file is available here: