How To Weld A Hole In Exhaust Pipe. Wipe the surface down with acetone. Use sandpaper to prepare the surface of the pipe.
After cleaning with a hard brush sand the affected part down if youve got any sandpaper. The exhaust pipe welding is not as hard as it seems to you now. Hard brushing the surface around your leaky exhaust removes mud dirt and grime.
Cleaning the entire area around your leaky pipe encourages more adhesiveness.
You can use only exhaust tape or epoxy to seal a pinhole or tiny crack. Advantages of MIG Welding Exhaust Pipe. GMAW passes use an open root weld with no backing ring. Thanks again for your question.