This is a "remix" of the ratchet wrench that NASA sent up to the ISS to be printed. The original version (http://nasa3d.arc.nasa.gov/detail/wrench-mis) only can tighten, so this version that I am uploading can only loosen.
All credit goes to MadeInSpace for the original design.
ratchet_wrench_loosener.stl | 313.9KB |