You sure about that? [winking smiley] (punctuation marks get messed up in the editor these days)

Looks like a standard heat gun is a good option as long as it has stepless adjustment and you take proper care to find the right setting. I practiced on an old really junky arf that I have and initially I started out at a distance of 5 inches or so and carefully moved in closer.

I suppose it could have use also for heating the crankcase of an engine to loosen bearings. 600 C ought to be enough for that I would think.