Relay + switch case

thingiverse

Case for a relay with a switch to allow bypass it. This was originally designed to work along with Octoprint and a Raspberry Pi, but since I sometimes can't use the RasPi, I needed a way to change power supply mode from relay to direct (I know I could use NC port on the relay, but I prefer this way). The thing consists on two parts assembled together. The relay is a bit off from the center of the switch due to its geometry. I used a JQC-3FF-S-Z relay and a EMAS T85 switch with two terminals per side. It also features some labels (in Spanish) to know which mode I am using. You can change/delete it using the provided Fusion 360 file (ignore the wrongly modeled switch, the case uses the correct dimensions), or tools like MeshMixer. To print it, lay the "bottom" part with the big wall down, and the "top" part with the wall with the letters down, enabling bridge configuration if needed and supporting the overhang on the wall with the curvy hole. The chamflers and other overhangs should print ok with no support. I used PLA, but I don't think it's critical, as long as the clamps can snap together and don't get too loose. 0.3mm tolerances were applied for the clamps and the relay support. Once closed, it may break if you try to open it, so be careful. NOTE: the picture of the case I already printed is a bit open because of a designing error. I fixed it before uploading it, but I didn't print a new one because it works fine for me.