I love the passthrough chess pieces so much I decided to make my own. Here is the BISHOP piece.

This is a print-in-place design. Print in different colors, separate, mix & match.

Press slightly on the bottom to separate.

Pull apart

Mix & Match

=============

I have printed tons of these (on multiple printers) and if you experience the model coming off of the build plate while printing, one of these few simple solutions should work:

1. CLEAN your build plate with a quality dishwashing liquid (like Dawn) & water before attempting to print.
2. Add a BRIM (outer brim).
3. Increase the temperature of your build plate.

===

Check out the full set of impossible passthrough chess pieces: HERE