Hi, New forum member but been lurking around for a while. I am building a bed frame, unfortunately no professional CAD drawing like the previous post which strangely is also a bed. I can post pictures later when I have actually done more than just planning but I would like some help choosing the gauge of tubing for the side and 1 centre rails/bearers. I have based my design on a bed I had made in mild steel probably about 20 years ago so at least I have a point of reference. My plan is to use stainless 1" (25.4) tube legs with a 2mm wall. Attached to the legs will be some lugs which the bearers will slide on to and secure with a bolt or two. For the bearers the existing bed uses 2"x 1" mild steel, however without dismantling I cant be sure what the wall thickness is, probably 2 or 2.5mm. First question is about the bearers, I am hoping to get a popular common size to keep costs down. Can anyone suggest what wall thickness I should be using, would 2mm be sufficient or should I be going for 2.5 or 3mm. The cost of 2x1 seems to go up considerably once going aboce 2mm. Or would I be better using two lengths of 1x1 welded together, or maybe 2x1 2mm wall with a piece of 2"x2mm flat bar tacked on to the inside ? Also, for the lugs I was going to use stainless square tube with a wall thickness of 2mm, these will be welded to the legs (also 2mm wall). Do you think this will be strong enough ? As a novice welder I was going to TIG weld them, am I likely to catastrophically overheat or blow a hole in 2mm tube ? Any suggestions would be helpful. Thanks in advance.