Chặn cửa hình đĩa mềm 3.5 inch độc đáo

Dimensions in mm: 57 wide, 55 long, 15 thick.

Print standing on its side with the drive head access window at the top,

If done right, the 45 degree slope is at the top side like in the 2nd photo.

Scale to 1.57 (increase by 57%) to make it an actual size floppy disk (90mm).

There's also an inverted version, in case your printer doesn't like small overhangs.