heres how we do it in the shop :thumbsup:
get an uber thin metal card (substitute for a thin paint scraper at home) and work it behind the badge, and IN FRONT of the panel. no need to touch the panel with the metal scraper/card. leave as much glue on there as you like.
rubber wheel ($5 from bunnings) attatchment for your air grinder, power grinder or rotary tool. we use an air powered rotary tool.
the rubber wheel isntantly, completely and perfectly removes all traces of glue without damaging the paintwork in any way at all. AS LONG AS IT IS NOT ACRYLIC!!!
no thinners, no heatguns, no boiling water, no mess, no risk of damage.