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**aotte1** · 10-18-2015, 09:36 PM

John,

"One thing about TIG welding old rusty and dirty parts is that even though you blast the surface, the weld puddle will pull contaminates from the backside, into the weld."

How much can all this contamination effect the weld strength for sheet metal, would like to TIG if not a problem? Know condition of metal will effect contamination. These area are likely the worst metal to be fixed.

"What size tungsten and filler rod are you using?"
Will get this info to you tomorrow.

Les

10-18-2015, 09:36 PM	#103
aotte1 Senior Member Join Date: Oct 2013 Location: lousiville Ky Posts: 2,637	Re: 64' K10 Project Long Bed John, "One thing about TIG welding old rusty and dirty parts is that even though you blast the surface, the weld puddle will pull contaminates from the backside, into the weld." How much can all this contamination effect the weld strength for sheet metal, would like to TIG if not a problem? Know condition of metal will effect contamination. These area are likely the worst metal to be fixed. "What size tungsten and filler rod are you using?" Will get this info to you tomorrow. Les Last edited by aotte1; 10-18-2015 at 09:42 PM.