Another type of Poly Welding is Extrusion. Extrusion welding is done with a hand tool, known as an Extrusion Welder.
An Extrusion Welder has a nozzle for hot air and an extruder that pushes filler material out. The process involves heating the two joining surfaces and adding a material filler (extrudate). The extrudate is applied using pressure and then allowed to cool, welding the surfaces together.
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