The racks I have came out of a motorcycle shop and were holding heavy steel and aluminum parts. Of course I'll keep an eye on stresses and weights and will add in supports or reinforcements where needed. The main consideration was using it to provide massive areas and options for organization above and behind the welders.
BTW, this stuff is thick, 1/4+ thick wire, all welded together, heavy and thick brackets, up to 3/8"
As far as the welder... plug is on, wife is picking up Ar today for me, but I've been too damn busy with work and training the new pup to even set foot in the shop.
Trip Bauer
Former USN HT
Everlast 200DX New Model
Hobart Handler 125 MIG
Van Norman #12
Atlas 12" engine lathe
'98 RoadKing - 84 Ironhead - 59 Ironhead