In the end I decided to skip the heat gun idea; I first tried the blow dryer at maximum power, but it didn’t do much. It DID show that the air when everywhere and I couldn’t control it. Next I tried my hot knife for cutting styrofoam. It was marginally successful, so I moved to a soldering iron at 16 watts. That was better but still not enough. In the end I went with a 25 volt soldering iron and that was much more effective. As the filament bubbled and smoked (lots of smoke, used an air filter next to the printer to keep in all in check), the plastic changed where the tip went but didn’t melt. After it cooled I could pull a good portion off by hand. After an hour’s worth of work I had half of it gone. I plan on removing the second half later today and giving it another test print. Thanks for the advice about the aluminum foil–that’s a great idea for future projects where I need to use something hot in a confined area.
