Due to a critters nest in one of the wings, I'm going to replace the front spar because of corrosion. I'm trying to remove the ribs where they hysol to the spar. I've been using a small chiesel, but it's taking hours to do 4 false ribs. I tried a heat gun I have for shrinking monocoat on model planes. I didn't have any luck at all with the heat. I got it hot enough that it discolored one of the false ribs. The hysol never did get soft..........am I doing something wrong? I just read where someone used a hair dryer. Perhaps I'm getting to much heat for a short period of time with the heat gun. Do I need less heat for a longer period? Will the heat soften the hysol, or will it just allow the bond between the hysol and the spar to break loose? Any ideas? I'm open to suggestions. Thanks
Brian