Kossel Mini Top Vertex Idler Tensioner

thingiverse

I find the slanted screw on the original a little awkward so I repositioned the tensioning screw to push down vertically on the tower extrusion. Adds about 16mm height to the original. OpenSCAD file included but you have to get the other support files from Johann's github repository - https://github.com/jcrocholl/kossel Instructions Important: Insert a small nail to with a head big enough cover the center hole in the aluminum extrusion profile. This will serve as the pressure point that is pushed by the tensioning screw. I used the pin pushed out from a blind rivet. It's got a nice round head that fits the tip of the allen screw perfectly. Without this cover, the screw will dig into the hole. Place M3 nut underneath the "cap" to pair with the M3x12mm allen cap screw. Tighten screw to increase tension on the belt.