This is just another one of those esoteric bike tools; that seem to exist simply so bike toolmakers can extract money from people who want the service their own bikes.
This is a splined bottom bracket tool for installing/removing BBT-32 style bottom bracket cartridges. The OpenSCAD source code is parameterized so it can be easily modified to accommodate other splined bottom brackets or freewheel cassettes.
I have printed this in PLA and used it, it does work. However, because of the forces applied when using this tool, 100%, or near 100%, infill is highly advised.
