x2.7 sx2.7 lms 5500 G0836 spindle lock

The pins are 12mm offset from the inside end of the spline. They are 8mm square and have a 90 degree chamfer. it was printed with 35% infill which is strong enough for the few tightening/loosenings that i have used it for.

https://www.youtube.com/watch?v=QMmzyp-AdEI&t=2s

update: I cut an aluminum cam plate with the same model I originally printed and have been using it with 4 bolts for a few weeks. It works pretty well and I'm not even really tempted to mess with it. I didn't bother a