yeah, for waves and stuff it's not really good, especially if it's adherred to the skin. Everyone knows hoods especially are hard to shrink with excessive heat in localized areas and the problems venture outwards til you're scratching your head and the entire hood has gotten shrunk, so this means a shrinking disk is definitely the tool you want to use but you mainly only want to use it for tightening up the panel, in which you're better off using the disk in the corners to tighten the overall flex of it but to also use it in the traditional aspect of "metal work" shrinking(not solely just flex of it) more along tighter areas where the metal is tighter and easier to work with. The more you venture towards the middle of the arch the better the metal work has to be in order to not get adverse affects. It's my opinion that the disk is best useful when using shot bags and planishing hammers or something equal to it but for hoods to go light and kind of keep it close to tighter areas and more careful in looser open areas. For quarters and tighter areas they are much more forgiving for the user.
one last thing, the disk is at its best when you have easy access to both sides of the panel so you can break out the bean bags and mallets
planishing hammer or equal to. without that it's much more difficult to get the results needed to truly get any value out of it, and so with that said,
I find it easiest to use it sparingly on hoods/decks cause it can reek havoc on hoods that aren't fully worked.
Last edited by tech69; 12-04-2012 at 11:17 AM.