Danner process
Quick Summary
The Danner process is a method used in glassmaking to produce glass tubing or rods. In this process, a continuous stream of molten glass flows over a hollow, rotating mandrel positioned on an incline. As the glass flows down and the mandrel rotates, it forms a hollow tubular shape. Air is blown through the center of the mandrel to maintain the tube's form. For creating rods, a slight suction is applied to collapse the glass walls as it leaves the mandrel. This method allows for the continuous drawing of glass into desired shapes.12
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