Anycubic i3 Mega bed thumb screw caps

thingiverse

Thumbscrew caps for the i3 mega. These clip over the head of the brass thumbscrew and secure with a 3mm (or similar) self-tapping screw. As the cap has 10 points and the pitch on the adjustment screws is 0.5mm, moving the cap by 1 point moves the bed by .05mm which makes it easy to make fine adjustment to the bed height. There are two drive dogs on the side opposite the screw, and the screw pushes the thumbwheel over that way a little so that there's no risk of these slipping round. My thumbscrews measure 14mm x 3.5mm