I wanted to let everyone know about a product that I tried on the suggestion of a lab tech. I was discussing with him the complaint that I get from people about getting the debris out from the inside of an emax crown after using the pastes that help dissipate the heat during firing. I used to try and clean it with a steamer, or let it sit in an ultrasonic with alcohol for 5 minutes, or scrub the daylights out of it with a toothbrush and soap. Doing any or all of those things still seemed to leave a bit of residue. My lab friend turned me onto a product called super peg 2. It is made from a company called Idenco. You can find it on their website http://www.indenco.com. I have found that when using this, the firing paste either comes out clean, or if there is a bit of residue left, it rinses right out. It is a vast improvement over any of the other products I have tried as far as easy of removal of that pesky post firing residue.