Hot Ultrasonic Handheld Plastic Welder Machine KitHot Ultrasonic Handheld Plastic Welder Machine Kit Looking for a plastic welder to add to your repair tool box? Our pvc welding machine was created to release enough heat to melt plastic for quick and simple repairs. With its handy design, the plastic welder kit is easy to manipulate regardless of how big or small your repair project is. It also comes with a 4 feet long cable, giving you the freedom to move around with the ultrasonic plastic welder.