I wanted a pet door for a screen so my cat can go in and out as he pleases, but also not letting in all the bugs.

I started by remixing an existing pet-door, but found it was easier to just build the frame myself.

The frame is 241mm x 290 mm and is a single print (sorry if it wont fit on your printer)

Printing:
1: Pet door frame - back.stl
1: Pet door frame - front.stl
1: thin flap.stl

The door prints best with supports, the frames do not need any supports

Assembly: bottom frame -> screen (with small hole for bottom frame hinge cut) -> thin flap -> top frame

To reduce weight, and prevent tearing the screen, I used expoy glue to bond the 2 fames together with the screen in sandwiched inbetween.

I found it was best to line up the pet door through the screen (while it was on the floor) and then cut the notch for the back door's hinge. Next I applied glue to the back frame and screen, and then added the flap and front. I let it sit overnight with constant pressure applied. In the morning I cut out the screen in the center (and a little bit of sanding the edges) and it was all done.

I also uploaded the .mix file if anyone wants to modify or remix

Creality

Ender 5

No

Yes