vals38•2mo ago

A shop in Tacoma showed me how to use a heat gun for dent repair

I was at a trade meet in Tacoma last fall and saw a guy working on a door panel. He used a heat gun on low for about 90 seconds on a shallow dent before he started pushing it out. He said the heat lets the metal move easier without cracking the paint. I tried it back at my shop on a 2018 Civic fender and it worked way better than my old cold method. The paint stayed flexible and the metal popped right back. Has anyone else tried heating panels before working on them, or do you stick with the old way?

3 comments

3 Comments

wells.brooke2mo ago

Have you ever had one of those moments where a simple fix just clicks? Reading your post, I felt that exact relief. I spent years being too careful with cold repairs, always worried about the paint. Hearing that the heat method worked on a newer Civic fender is a game changer for me. It makes total sense that letting the metal relax first would stop those tiny stress cracks. I'm definitely giving this a shot on my next job.

margaretk892mo ago

Honestly, the heat gun trick makes me think of trying to fix a warped vinyl record. I had an old album that sat in a hot car, got all wavy. I read online to put it between two sheets of glass and leave it in the sun. Did it for an hour, and it actually went back to flat. Same idea, I guess, just gentle heat to let the material relax.

perez.barbara6d ago

Read somewhere that @margaretk89 is spot on with that vinyl record analogy, it's the same basic idea of using heat to relax stress in a material. I actually saw a video from a body shop supplier that said warming panels to about 120F is ideal, just enough to soften the metal without cooking the paint. Tried it on a older Toyota door with a crease and it made the metal way more forgiving than when it's cold. The trick is not going too hot or too long, you just want it warm to the touch, not hot enough to burn your hand. Definitely beats the old way of just hammering away and hoping for the best.