20mm board standoffs

thingiverse

Standoff posts are designed for mounting printed circuit boards outside of cases. Usage: I use an FTDI EVE F800B board and wanted to develop software but I didn't have a case. The standoffs have a small pilot hole that makes it easy to 'tap' in some 4-40 BHCS machine screws using a #43 drill. The same type of standoffs are used to mount a Nucelo board next to the display board. These have proven useful for me, I've printed over 24 of them. In this update, I added the "fat" standoffs which include a fillet between the standoff and the base, making them stronger. Using them has taught me that sometimes if you hit them at an angle using PLA or PET filaments, the standoff would break off from the base but the fillet fixes this. General usage involves using a 4-40 (or M2) machine thread bolt to go through the PCB into the standoff and then there's solid plastic in an internal tube that's printed (shown in the drawing). You can put the board on the table or if you have multiple boards, attach standoffs to the board first. Then arrange the boards as desired using poly carbonate or acrylic, then apply a drop of cyanoacrylate on the pads and stick them together. The boards can now be removed by unscrewing them while keeping their arrangement in place.