Secret Bolt

thingiverse

This is a large simple Bolt, the thread and bolt head (nut) are separated by a left hand thread. The thread is hollow allowing for it to be used as a compartment. The term lefty loosey, righty tighty doesn't apply here with the left hand thread. There is a 1mm clearance. Print dimensions are; The thread is z=190mm x=94.62 and y=94.62 The bolt head (nut) is z=60 x=200 and y=173.39 You can shrink the dimensions down to 80% if needed. Original model at thangs.com: https://social.thangs.com/m/809535