How to Weld Plastic
Set up a workspace in a ventilated area to protect against dust and fumes.. Put on heat-resistant gloves and long-sleeved clothing for protection.. Clean the plastic
Steps
Set up a workspace in a ventilated area to protect against dust and fumes.
Set up a workspace in a ventilated area to protect against dust and fumes.
Put on heat-resistant gloves and long-sleeved clothing for protection.
Put on heat-resistant gloves and long-sleeved clothing for protection.
Clean the plastic
Clean the plastic
Use the letter identification on the plastic to choose a matching welding rod.
Use the letter identification on the plastic to choose a matching welding rod.
Use a welding rod testing kit if you're not sure what kind of plastic you have.
Use a welding rod testing kit if you're not sure what kind of plastic you have.
Remove paint on the plastic with a piece of 80-grit sandpaper.
Remove paint on the plastic with a piece of 80-grit sandpaper.
Clamp and tape plastic pieces together to hold the joint in place.
Clamp and tape plastic pieces together to hold the joint in place.
Preheat the welding gun for at least 2 minutes.
Preheat the welding gun for at least 2 minutes.
Secure the plastic together by tack welding the ends.
Secure the plastic together by tack welding the ends.
Trim the end of a welding rod with angle cutting pliers.
Trim the end of a welding rod with angle cutting pliers.
Insert a welding rod into a speed nozzle on a welding gun.
Insert a welding rod into a speed nozzle on a welding gun.
Move the tip of the welding gun slowly over the plastic for a speed weld.
Move the tip of the welding gun slowly over the plastic for a speed weld.
Swing the welding gun back and forth if you're doing a pendulum weld.
Swing the welding gun back and forth if you're doing a pendulum weld.
Wait at least 5 minutes for the plastic to cool.
Wait at least 5 minutes for the plastic to cool.
Sand the welded joint down with 120-grit sandpaper.
Sand the welded joint down with 120-grit sandpaper.
Finish the plastic with 180 and 320-grit sandpaper.
Finish the plastic with 180 and 320-grit sandpaper.
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