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Message: <blockquote data-quote="JKraver" data-source="post: 209563" data-attributes="member: 13886">I see yes there is a difference between bench set and bench cool, subtle.I thought I answered that question regardless, the acrylic will auto polymerize within that period of time. It is a self/heat cured hybrid material. It brings quick initial set and dimensional stability with the long term tried and true effects of heat cured. They have done a good job with the material. You can leave the mold empty and formed as long as you like/feel comfortable, You should reapply separator if it looks broken down or skinned, and wet the teeth with monomer to clean and begin the softening process.There is a swelling period allowing the acrylic to reach optimal injection viscosity, Then there is an injection to fully fill the mold and expel all the air through the filter and seal itself, then the heater kicks on, polymerizes for 25-30min, 10min monomer reduction and you are ready to move on. The flask is hot as heck once the program is done and is able to be bench cooled, or water cooled.</blockquote>