I agree with this. I usually do a dryer on high or heat gun on low for blue. Normally that'll free it up without doing anything excessive. Red is a different story.
All of the above are solid options. One trick that I use is a cheap bit that fits my fastener. I hold it in the fastener and hit the bit only with a propane torch. That heat travels through the bit into the fastener only.
I agree with this. I usually do a dryer on high or heat gun on low for blue. Normally that'll free it up without doing anything excessive. Red is a different story.
All of the above are solid options. One trick that I use is a cheap bit that fits my fastener. I hold it in the fastener and hit the bit only with a propane torch. That heat travels through the bit into the fastener only.