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This is the most simple print design ever. It came about out of a necessity. I was having issues feeding my fish in my pond. The food would quickly get sucked up by my skimmer before the fish would be able to eat it. That could lead to destroying the balance of the pond filtration system. So I printed the ring. Best thing ever. Fish are able to eat without waste. Now they even know when I drop the ring into the pond that it is time to eat. Will work great in a tank too. Make it any size you need.

Notes:

1. Upload into your slicer
2. Recommend 3+ perimeters and top and bottom and minimal infill to help with floating.
3. Print
4. Enjoy feeding your fish.