An easy to remove and attach ring of spikes for your wheelchair handles, to prevent unwanted ‘assistance’ from helpful strangers.
Inspired by a print by JDanu (https://www.thingiverse.com/thing:5213822) but rebuilt for easier printing and a wider range of (textured) wheelchair handles by request of a friend.
Current model tested on 28.6mm x 32.8mm and 29mm x 30mm handles. See picture. I'd suggest printing 2 for every handle to avoid someone sliding them out of the way.
If your handle has a different size, resizing them in Prusa Slicer should work. If not, I've included the Fusion360 files. If you need another format, please let me know.
The print in the picture was made using Prusament ASA, but any ASA or PETG will likely work. I advise against PLA, as that'll deteriorate quite fast in the sun.
The author hasn't provided the model origin yet.