This is just a modification of one of the parts for this design:https://www.youmagine.com/designs/alternative-um2-feeder-version-twoHaving had this piece break often (the little "claws" would snap off) I just rotated it to change the direction of the layers, and made a flat bottom. The "back" is also a bit thicker, since I've had it break there as well.It doesn't look quite as neat with the flat underside, but it holds together better.