Y-Axis Belt Tensioner for Prusa I3

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UPDATE: This tensioner proves to be inadequate, revealing its weaknesses after a prolonged printing session of 30-40 hours. Initially, I employed a metal bar with a diameter of 1.5 mm for this component. However, I am now considering an alternative approach: integrating the original bearing into the design in hopes that it will provide sufficient release. Instructions: The printed results are satisfactory, having been produced without support or raft on my Replicator 2 using the following settings: 50% infill density, two shells, and a layer thickness of 0.2 mm.