Design files for box to hold 10 or 20 micro:bits. The designs are to be cut out of 1/8" wood (3.2 mm). If your wood differs in thickness - especially if it is wider, the size of the slots will need to be modified to fit the material. The green drawing on the sides of the box is to be etched - or may be omitted. The sliding tops for the boxes are in separate files and may be cut from 1/8" acrylic or wood.