Printable Relay Board Mount

Printable mount for the MakerBot Industries relay board to go on top of one of the Cupcake stepper controller boards. MBI has a kit for this (http://store.makerbot.com/accessories/relay-board-mount-kit.html) with a nifty laser-cut octagon wood mount, which is elegant and cheaper than buying the hardware yourself. But if you happen to have a MakerBot, plus some extra standoffs and long screws on hand, you can print one.

I came up with overlapping squares instead of a octagon because the two