In order to suspend the parts in the booth I got three sticks of 1 in electrical conduit and made some attach points on each end. Real simple. Just oversized conduit clamps on each end and a pin (nail) that is captured with a smaller, smooshed conduit clamp. Easy to remove, the pin won’t fall out if it turns and the end of the conduit won’t slide out of the end clamp. When I need to remove the side 2x2s just pull the nails and slip the tubes out of the way. When Hope Depot is a 30min drive each direction you can get creative with what you have around the shop. Saved time, money and works great!