Duender PSU Cover for E3v2 PSU

So, you built your Duender from one or more Ender3v2 or later and want to use the slimmer PSU, as well as the split power switch + outlet combo, but you don't want to shock yourself when touching it in the wrong spot? Then you've come to the right place.

This is compatible with the "CMS-350-24", which seems to be a relabeled LRS-350-24 (by Mean Well).

I'm a bit frugal when it comes to filament, so the walls are pretty thin on this (1.2mm). Stability is provided by the interior features and the fins on the back.

You probably don't need to use all three screwholes. I've only used the two on the back for mine and it's been fine.

Please ignore the horrible cabling in the back of my photos and rest assured that they're being worked on :-)

Onshape Link: https://cad.onshape.com/documents/a9149848acc8bf9784cc126d/w/0bb96558ea3c83ca6a7eb689/e/ba948f55d8cdb025fad73aa8

Assembly instructions

1. Add two M3 heatset inserts into the screwholes

2. Insert the switch

3. Connect the switch to the outlet

4. Insert the outlet

5. Put the 24V cables through the hole in the bottom

6. Connect the cables to the terminals on the PSU

7. Slide the assembly on and secure it with M4 screws

Attention: Make sure that your M4 screws are at most 4.2mm long for the holes on the back or 6.2mm on the side. Overly long screws may damage the PSU and cause an electric hazard! If you only have screws that are too long, print yourself some standoffs. I've included a simple cylinder that you can scale to your needs.

Print settings

This is not a structural part, you can get away with cheap settings. This is what I used:

• 0.6mm nozzle (0.4mm works as well)

• 2 walls

• 2 top/bottom layers

• 20% infill

• no supports, print upright