G20 Belt tensioners for Printrbot Jr. 1307

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Prints directly on the X and Y axis of the Printrbot Jr. Simply print out the design, then feed the tail of the belt through and secure with a zip tie. The fit should be snug but not overly tight; to ensure it stays in place, apply a small drop of glue. Initially planned to include little feet to hold screws in place, but ultimately decided against it after cutting the belts too short.