UPDATE: Originally, I had the magnets just friction fit into the holes and it worked okay. But over a short while (I want to say about a week), the magnets would stay on the printer while removing the catch. I've added a small amount of Loctite super glue to each of the holes to really hold the magnets in there, and it's been good since. Just thought I'd make sure you know to expect that :)
BadEngineer's poop bucket model, with some minor changes. Awesome model that locates itself at the chute on the back of the printer for easy placement without looking.
I reduced the amount of magnet holes from 6 to 2, partly because I didn't have too many magnets to use but also because I thought 6 was a little overkill. The diameter of the holes was also changed from 6mm to 8.2mm, for use with the 8mm x 3mm magnets that I had around.
Also changed the placement of those magnets to be centered vertically, and centered horizontally on each side of the model.
The author remixed this model.
I used the .f3d file to do the following:
Everything else is untouched from BadEngineer's original design.