3D Printing: How long will it take me to 3D print 20 small models?

This depends of course on the model, but 20 overnight is a tough ask no matter.

If they are small enough to all fit on the bed (and can then be snapped or cut apart) you can likely do this overnight.

Great tip- I tried that and was able to print a lot more, and more quickly.

20 overnight would be crazy

Crazy but doable!

We are all for crazy, though.