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NR211 MP porosity

3.7K views 7 replies 7 participants last post by  highplainsdrifter  
Echo what CEP says. With 211 watch that the slag isn't on the blackish side and/or with open areas with little to no slag. If so the votage to wirespeed (amps) relationship is off. Watch the slag puddle and make sure it's coming along behind you. It'll almost look like a clear drop of water on top of the bead. If you happen to slow down and the puddle catches up you have to move on, it doesn't like firing (arcing into that deep puddle for some reason. I like a pretty slight angle, close to verticle and a short stickout. Check the preheat section once in a while. I like about 1/8th to 3/16ths myself.