I make this durable chair in my workshop. The total weight of one chair is around 20 kg. I focus on durability and raw industrial aesthetics. Used square tubing 40x40 strip 40x5 mm for a larger table. The small one is square tubing 30x30 strip 30x5 mm, beech wood thickness 27 mm. Spot welding used on the outside, on the inside, where it is not visible, welded to give it its strength. Spot welding covered with welded rivets. On the bottom of the legs are plastic floor protections against scratches. #industry source