Not sure where the originator got the rosin name but it seems to have stuck (no pun intended) so I'll go with that name as well. I'll try to sum up what I have learned in the thread at ICMag in just a few posts. You can go over there and read the entire thread but it's over 2000 posts and growing so it's a long catch-up if you want to join in over there. A user called Hashmasta-Kut came up with the best (according to popular opinion) portable and inexpensive model. It is simply a hair straightener that he took apart and fastened the heating plates to a hand clamp. I'll post a pic of his and a few other members below. There are various heads on the hair straighteners. I believe he said the ones they call titanium were the best. There are also many different ways to attach the heads to the clamp, depending on which model straightener you bought and the type of clamp. I imagine most of them are pretty similar. Your mileage may vary.