Polargraph / Vertical Plotter Spring Tensioned Motor Mount
Description
Remixed from [hinge's](https://www.thingiverse.com/hinge/about) '**Polargraph - timing belt and spring load**' design: https://www.thingiverse.com/thing:1733420 This remix fixes some alignment issues with the tensioner arm, improves tension spring retention, strengthens the mounting plate, and makes a few other refinements. <hr> UPDATE: Now includes two versions of the motor mounts -- for 20mm and 22mm shaft-height NEMAs. Those just happen to be the specs of the motors I have on hand. Also included are the SketchUp source files. <hr> Polargraph / Vertical Plotter motor mounts with belt tensioners. These will mount Nema motors with a GT2 timing belt setup to a wooden frame. The benefit of having belt tensioners is that counterweights are not needed at the end of your timing belts (of course you could add them if you like). **What's Included** Left and right motor mounts. Tensioner lever -- you'll need to print two of them. End cap for the belt hook studs if you're worried about them sliding off -- you'll need two of them. And a belt wrap post that's useful for belt storage. **Project Guide** [http://www.polargraph.co.uk](http://www.polargraph.co.uk) - Use this guide to learn all the technical details about building a Polargraph printer.
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