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5. The next step in our process is one of the most exciting. Both the sash and the frame will come to our four point welders. All four precut frames are put into the welder. The machine calibrates based on the product ID. The first process is to have what is called a "hot plate" heat the vinyl at a temperature of 270 degrees fahrenheit. This is all done at a 45 degree angle. After a set time, the hot plate will pull out and the 90 degree press will come into place to apply even pressure for a set amount of time. This ensures a strong weld. Both frames and sashes will go through the same process.
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