A case for the resistor decade board from http://gerrysweeney.com. Includes OpenSCAD source code. Can be printed in PLA or ABS. Use with four M2.5 x 8mm screws (no need for nuts, just screw into the plastic). Printing is straight forward, no need for support and it can be made from PLA for better stability. This design is easier to print than the snap-on version and can accept larger tolerances. The box is symmetric and you can install the board both ways. The design is parametric using OpenSCAD so if you want to tweak it (e.g. changing the hole size) feel free to do so.