When I first printed this I was thinking there's no way I'll use all 12 bays, after all there's only 10 units. And yet here we are... Due to 'defective' flaps you'll want to reprint flaps and potentially store them somewhere before you go through all the flaps again replacing the defects.

Flaps... so many flaps. If you're making the Flip Flap, you 100% need this tray. Keep the flaps in order, and separated out per unit.

This is a very helpful tray for keeping full flap sets together! As I went through the initial several sets of flaps, I would rubber band them to keep them together and set them in the tray here.