My neighbor the retired mechanic swore by using a heat gun on stubborn bolts instead of a torch

After fighting a rusted control arm bolt for two hours with a torch on a 2005 Ford F-150 last Saturday, I finally tried his method and had it loose in under 5 minutes, so has anyone else found a use for a heat gun that surprised them?

3 comments

3 Comments

craig.mila6d ago

Yo, @dianahayes is totally right here. Honest, I used to be the guy who just grabbed the propane torch for everything stuck, figured heat is heat. Ngl, I messed up a set of bushings on a lower control arm doing that a few years ago, turned what should have been a quick job into swapping out the whole arm. But after seeing this post and trying the heat gun on some exhaust hangers last week, yeah, it's way more controlled and saves the rubber stuff around the bolt. Tbh, it changed how I think about stuck fasteners, I reach for the heat gun first now even on engine brackets. It just doesn't get hot enough to warp or damage the parts near the bolt, which is huge for suspension or plastic bits.

dianahayes6d ago

You used a torch on a 2005 F-150 control arm bolt? That's gonna mess up the bushings and ball joint seals. Heat gun is way safer for suspension parts.

the_nathan5d ago

That heat gun trick really does show how people get locked into "more force equals better result" thinking across the board. You see it in the gym all the time too where someone thinks cranking up the weight will get them stronger faster but really just wrecks their form and joints. Sometimes the gentler, more controlled approach is the one that actually gets the job done right the first time.