Seatback Hook (no supports)

thingiverse

I appreciated beer92266's concept because it didn't require supports and would produce strong parts with minimal load spanning across layer bonds. I wanted to create one that fit snugly around my 13mm diameter posts, too. Additionally, I thought I might as well design a slightly different shape for the other hook while I was at it. No need to print very solid unless you're planning to hang bags of rocks from it or something. Out of curiosity, I made a single hook set printed with 7 walls thick PetG and successfully hung a 40# bag without any sign of stress. I'd be more concerned about the damage to the upholstery than the hook itself. I created different sizes of each hook, so hopefully you can find one that fits your needs. The headrest hook comes in 14mm and 18mm diameter hook sizes with 54mm and 80mm length options. (Measure from front of post to rear of seat.) I made the 14mm dia x 54mm headrest hook and the larger seatback hook part myself.