Robert
You are correct! I could not find it when I posted the reply, Thanks for posting it!
Redlegs the hot rolled has mill scale,unless it is "p&o" pickled and oiled, cold rolled is what I have been using. You should be able to find 18 and 20 gauges used by a commercial sheet metal shops and distributors, 19ga is a little harder to find. The best welds are between equal gauges, if you don't need large pcs, a sheet metal shop mmay sell you cut-offs for a good price! i know someone in the Cincy area let me ask him if he has some 19 gauge, please double check your guage, but I think it is 19, don't worry if it isn't exact cause sheet metal varies!!! thin 19 gauge is 20 gauge. Nothing goes to waste!
