I was in need of a 3/4" Bench and did not want to go to the store to buy some. These were designed in Fusion 360 and I've included both the Fusion360 files along with the stl. You do not need to print this with supports. Just lay them down flat and print them out. They work great!
I printed this with Inland PLA .2 20% infill and no supports. I chose red so they would be easy to find. Some people may suggest to use nylon for these but I figured PLA would be fine. I've used these a ton and am really happy with the results.