This car guy tried dental floss and found that it's not strong enough for the job. It broke after just a few strokes. If you use string, you don't nead another source of heat. The friction of the rough string creates all the heat that's required. The badges are held on with double sided foam tape. You run the string between the badge and the foam. That will leave the foam stuck to the body. There is a special 3M flap wheel to remove it, but I use a rag, mineral spirits and a lot of rubbing.

My truck had a 3" plastic molding that ran the entire length. I removed it with a piece of string. It also had vinyl "SS Sport Truck" graphics. I used a hair dryer to remove those.



I just had to remove some lettering and a big gold bowtie emblem from the Impala.