This is actually the second trail I've run with the this. It's a small, printable, pachinko game! It's made to use standard size pachinko balls (about 11mm diameter) and even makes a pretty close representation of the pachi pachi sound you find in a full machine. My eventual plan is to expand this out into something of more of a functional pachinko game. I'm a little limited in the size of the my printing, so it's likely going to end up as a modular construction. This is more of a proof of concept to get the spacing and sizing down. I've included a STEP file to make for easier modification and manipulation of the files if you want to try your hand at making your own! See it in action here: http://youtu.be/P-DN_rCBELw The pins are strong enough to take the balls, but will bend if you press them with your fingers.