This is a guinea pig hay feeder. Print one of each end and 12 rods. The rods have a flat end and a slightly tapered end, I printed them standing up with the flat end down and a brim.
I only inserted 11 rods to leave space for putting the hay in. Your pigs might end up going inside and peeing if you do this though.
HayFeederBottom.stl | 280.4KB | |
HayFeederRod.stl | 28.2KB | |
HayFeederTop.stl | 314.1KB |