Benno, Welcome to the Frey. My pots have a stirring system witch I thing is essential if not mandatory, I pour in raw plastic, start the stirrer and let it get up to temp. Then general consensus is to get it up to 350 degrees Fahrenheit then lower it to around 320 to 330 working temp (this can differ according to your plastic). A good infra red thermometer comes in handy at this point and the stirring system keeps thing moving and allow for more accurate readings. It also works out any bubbles and helps prevent hot spots while maintaining any additives in suspension. My pots also have valves so I can pour directly into a mold or fill the injector from then. I can also stop the stirrer and fill the injector from the pot. Hope this helps and I'm sure you will get a lot of information.