In article , G.R. Patterson III
wrote:

Jay Honeck wrote:
Well, maybe. Now that I think about it, I suppose it depends on how much the
plastic flows, and sticks to the blade. I've tried cutting certain
plastics with heat that simply melted and reformed right behind the blade...

I had to be very careful with the one I had. I would turn it on and test the
cut until it got to a temperature that worked well. After 15 minutes or so, it
would get too hot to work well, and I'd unplug it for a while.

That's because you had the inexpensive, single wattage model.
What you really want/need is the more expensive variable wattage solder
iron. Kind of like mini-arc welder. Dial in the amount of current you
want to work the matterial at the right temperature.