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How to Repair Plastic Using a Plastic Welder

 



* Remove the damaged item for repair from cold, windy conditions.
* Preclean the damaged areas with warm soapy water or mild solvent degreaser.
* Rough sand, with 80 grit paper, the area of repair beyond 2.5" of the joint if the area is  to be finished with adhesive fillers and color coated.
* V-grind with rounded shoulders the damaged area for repair and join parts with foil tape or with our industrial Plastic Repair Adhesive, Product Number 180, which can also be used in conjunction with our Plastic Primer/Accelerator. If the plastic is difficult to bond, small holes can be drilled through the shoulders of the parts to be repaired for added adhesion.
 * Keep the area for repair as warm as possible.
 * Preheat the welding gun for approximately 15 minutes to desired temperature before starting your welding process.
 * Insert your welding wire into the preheat tube and feed your wire in a steady motion, moving your applicator tip along your joint. After your plastic welding wire has been applied, smooth over your welded area in a circular motion to join and imbed your molten weld into the original substrate. Allow ample time for your weld to cure. Follow the same procedures on the reverse side of your repair if required or back with fibre reinforcement tape and one of our Rapid Patch adhesive compounds. If both sides are to be welded, Ieave a thin space between the two pieces to allow molten weld to join each other.
*  You are now ready to finish sand, starting with 150 grit paper, proceeding with either waterborne solvent or two part epoxy primers and your finishing color coat if required.


      Note: Not all plastics are easily primed or color coated. Special preparations are required under these circumstances. Follow proper paint manufacturers procedures for plastics.

      Note: If the welder you choose is not heat controlled, you must take care not to burn your repair.