Prusa i3 Add-On X Tensioner

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There are plenty of idlers with a tensioner mod available for the Prusa i3, but why print an entire new one when you just need a tensioner that fits perfectly? This straightforward add-on x-axis belt tensioner works seamlessly with most existing Prusa i3 x idlers and requires minimal materials. If your printer has an unusual x-idler or shares a similar design, simply modify the included SCAD file to fit. To assemble this part, slice and print one of the provided STL files and add the necessary vitamins listed in the Bill of Materials. (One STL prints the tensioner part on its side with built-in supports. Although it needs extra cleanup, it produces a stronger and neater-looking part.) Next, just attach the endcap to the hole in the x-idler and screw it into the trapped nut in the tensioner. It's incredibly easy! (Note that the x-idler.stl file is included specifically for the "assembly" view in the SCAD file.)