Hi Lee I'm using a GBC Personal Laminator, seems to get hot enough. Today I made 2 more boards, both using, clean and pre-etch and both had 100% transfer. Because my printer never gets as dark as I would like I also laminate it with some green foil stuff i got from Digikey, it only sticks to toner.So after I transfer the toner to the copper I put a piece of the green foil over the board and run it through the laminator a few times and it turns all the toner green, filling in all the little pin holes.
Bill