Y'all don't read the README (i'm not judging, I don't either) so I'll post it here!

So, you've decided to cackle maniacally every time you flip the lights on. Who am I to judge? I do the same. A few notes before you jump in:

There are two (2) (II) (dos) (got it?) different switches in this package. One is for your standard 1-switch light switch. The second is for a 2-gang (or dual switch) light switch. Important: there are two parts that can be used for both (the transfer case and the pin) and two that are NOT (the handle and the backing). Choose wisely.

For the single-switch option: print two pins, one transfer case, one US-LS-Backing, and one US-LS-Handle. See the US-LS-Layout pics for recommended orientation. This one I print the backing standing up on, mostly because it prints that way really well and removing supports from the underside was a bugger. Assembly is pretty simple; put the backing over the switch, wedge the transfer case on the switch itself, and slot the handle into the holes and insert the pins.

For the dual-switch option: print four pins, two transfer cases, one US-LS-2Gang-Backing, and two US-LS-2Gang-Handle. See the US-LS-2Gang-Layout pics for recommended orientation. (I forgot to put the transfer cases in the picture, but the orientation for those is the same as in the single-switch design; so check that picture out, add the transfer cases, and proceed.) This backing cover has to be on its back; just too tall otherwise. Bump the supports away from the walls by like 2mm so you can pry the supports off the bottom. Assembly is a little more complicated; install the backing, put the handles on FIRST since the inner pins need to be inserted from the switch sides (see the 2Gang Overview pic) and then raise the handle enough to slip the transfer cases on the switch. Use your angles. GEOMETRY.

I did a lot of prototyping/design/experimentation/documentation/cussing with this project. That being said, I am not taking responsibility for you frying your eyebrows off or, worse, burning your house down. (I have priorities, obviously.) If you follow this guide, do so with caution and common sense. Check your work. Check MY work. If you spot an egregious error, please let me know so I can correct it.

If you aren't already subscribed to my Patreon (patreon.com/wrongwaytoinvent) and you like my work, I'd really appreciate you subscribing for a month (or longer?) to support me and my printing endeavors. Thank you so much!

All the part designs are my original design work. You may share them, as long as you a) you leave my name and handle on the parts, b) don't resell them, and c) cite me and my Patreon where you post the designs (pretty easy, it’s just patreon.com/wrongwaytoinvent). If you want to do redesign work on them, please ask me first—depending on how extensive it is, I’ll take my name off for you.

Thank you, and happy printing!
William Sonnek
Sonnek Designs
wrongwaytoprint

Creality

Ender 3

No

Yes

Just make sure to use tree supports for easy removal. The rest is optional.