I use .024 wire for all my welding, floor pans, 1/4 patchs, trunk pan etc. Get some old sheet metal and practice with it. Make sure the surface is to bare metal and the ground has good contact with bare metal, go slow and play with your settings.
I see no way to work on or replace the outer wheel house with out removing the 1/4 area unless you are just doing a small patch in the housing. If it is the entire housing you are replacing you are going to have to remove the area of the 1/4 around it at least.
Bill
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It is not a problem.... It is just a blood pressure monitor.
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