Helloooo, I’m finally getting back to my bench project - however - having read a few threads on welding benches I’ve changed my plan slightly. I’m now going to make the top half slatted (already done) and half solid, b.u.t. to do this I’ll need to join several 150 x 5 plates and 600 long together. There’s an intermediate support at 300. I’m thinking to minimise any warpage I should pre-heat. But how much? Warm, radiator hot, 100+ degrees ? I will be spot welding every hundred mill around first - also any tips for order of welds? I was thinking doing the short ends first then starting from the middle on the long sides and running out?