It was made by an
Epilog Mini 18 laser cutter, using a sheet of ordinary 1/4 inch thick acrylic. I'll attach the file, in both SVG and Corel Draw format. The thin black line is where the laser cuts. The thick colored lines are ignored by the laser and are meant only to visualize the position of the PCBs.
After cutting, the 6 holes were tapped with a #4-40 tap. I used an Enco auto-reversing tapping adaptor on my drill press, with the belts configured for the slowest speed (about 100 rpm). Those tap adaptors aren't cheap, about $150-200 used, and $500 new. But if you're on a budget and have patience and the willpower to hold you hand steady to keep the tap bit at a right angle to the plastic, the holes can be tapped using an
inexpensive tap wrench. But using a power tool is so much quicker and more satisfying.
The 4 short standoffs are
Keystone 4800, and the 2 taller ones are similar Keystone parts. The board is held by
3/16 #4-40 machine screws.
If you don't have access to a laser cutter or you'd prefer to avoid the work of tapping threads into the holes, another pretty easy way to make this base is to have a company like
Tap Plastics cut the acrylic for you. Then you can just drill the holes with an ordinary drill press or even a hand drill if you're careful to clamp the material still and make a center indent so the drill bit doesn't "wander" before entering the plastic. That standoffs are made with female threads on both sides, so you can just drill the hole a slightly larger size and use a longer screw to go all the way through the material. The final result is almost as good (depending on your skill with drilling), just 6 screw heads on the bottom side rather than a nice flush material.