I need 3x3x18mm keyway piece for my enertion pulley because mine fell out while riding. Suggestions?
home depot? worse case scenario you get a nail, hammer it square and cut it to length
Enter 3mm key steel in Ebay.
you can also use a small 3mm bolt - this is what Torqueboards/DIYes uses - more torque to tighten and easier to remove. Super easy to strip those small set screws. As long as there are two to balance out…
i have an assortment like this - $12’ish:
edit - you need a keyway piece, not set screw. whoops. (need more coffee)
here’s a keystock set - it looks like they are typically undersized and the 1/8 might fit with some minor sanding/filing:
3mm - 3/32 inch - 0.118 4mm - 1/8 inch - 0.157
(again about $12 - but probably slow shipping)
Karmannghiagirl’s idea is looking better and better if you need an immediate fix!