In fact, there are many tray drawers, but the specifications are varied, so I simply made some of them. The following specifications apply to China Taobao: 500g tray, drawer height 33. Fixing screw M4 self-tapping, need to punch holes in the tray, I play 6mm diameter. 11mm counterbore on both sides of the drawer for magnets with a diameter of 10mm. I will update other sizes one after another. "holttool.stl" is used for positioning tool.