torn up model in STL but a solid in SKP

[winokur]

SKP tinkerer looking for some help. Thanks in advance for your suggestions!

I am trying to replace a broken part in a no longer manufactured door lock (welcome to owning an old home). I’ve drawn this a few times in SKP, each time I ended up with non-solid drawings. I finally got my process to be careful enough to produce a solid drawing, however when I try to load it print, the drawing looks like it’s torn up and has extra bits I can’t explain. I’ve tried the clean up plugin and an online stl repair tool from Asos. Neither worked. Any suggestions what I’m doing wrong, and hopefully a solution?

arcadia door.skp (4.7 MB)

[DaveR]

I see some reversed faces. There should be no blue back faces exposed in your model.

Inside the holes and on the bottom.

The back faces are supposed to be toward where the printing media is and the white front faces toward air. Fix those and your .stl should be fine. It is in the Creality slicer.