I made this part to protect the spinning weel on the bottom of the box drive. so the spinning action is not blocked. and there for is it important that you make sure that this disc is free spinning once installed and don\t course friction to the weel. I used some lok tide and the wasser (spacer) to make sure this the case.
link to boxdrive disc video
The author marked this model as their own original creation. Imported from Thingiverse.