Sparx Skate Sharpening Ring Case

I bought a Sparx Skate Sharpener ring for my son to allow him to get his skates sharpened as needed at the rink. Rather than have the ring just floating around in his hockey bag I made this case so that he could protect the ring and also more easily find it in his bag (I printed it in bright orange PTEg. I used 0 infill so that it was rigid enough to survive the rigors of life in a hockey bag.