I realized that the 8mm shaft diameter gear I purchased from Trinity Labs was a little large for the existing version created by piit79 and wanted a couple other modifications including filleted edges and a bit more structural support. In making these changes I pushed out the idler base and therefore had to lengthen the strut.I am running dual extruders so the file includes a mirrored version as well. Following Piit79's original instructions:Instructions I printed in PLA with a 0.5mm nozzle, 0.12mm layer height, 95% fill.You need: -- 2x M3x8 -- 3x M3x25 -- 2x M3 nut -- 2x M3 washer -- 2x M3x45 -- 2x spring or piece of rubber diesel pipe (see Airtripper's original) -- M5 pneumatic push-fit adapter -- 1x 608 bearing for idler