Melt Plastic Together

Before you start the actual weld pin loose pieces of plastic together by melting the ends of the joint.

Melt plastic together.

Showing how i fix plastic with an old soldering gun. Place the two halves together leaving a hole in the top where the plastic will be poured. Wait for the plastic to begin melting joining the pieces of plastic together. This can be handy if you are melting hard abs plastic together to fix a crack.

Things that might help with a projec. The process can be performed manually in a drill press with suitable chucks to hold. Additional plastic can be melted into the groove to create a stronger bond but depending on the situation this won t always be necessary. Plastic components of circular cross section are rotated one part in contact with the other until sufficient heat is generated by friction to cause a melt at the interface which solidifies under pressure when rotation is stopped to weld the articles together.

Sometimes this works and sometimes it doesn t but it s worth a try. If you need to melt the pvc to the extent that you can mold and shape it you will need a double boiler. Fit a tack welding nozzle on your welding gun then apply a little bit of heat. I don t know if abs specifically was used and due to tight regulation nowadays trichloroethylene is very hard to obtain but back in the day you could just melt edges of plastic items with it stick them together then let the solvent evaporate leaving a weld as strong as the original plastic.

May 9 16 at 8 41. Then fire the clay mold in an oven to harden it. Melting pvc plastic can be a very simple project depending on your reason for melting it. The basic idea is to apply heat to the edges being joined in order to melt the plastic until it is liquid enough to blend the edges together.

Remove the plastic from the acetone. If you simply need to melt the pvc enough that it is pliable a heat gun will get the job done. If you have melted plastic in a lot of acetone pull it out with tweezers. Secure the plastic together by tack welding the ends.