Repairing broken plastic - GIF

Repairing broken plastic.

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Previously:

Blow molding a plastic jar - GIF
Closing plastic disposable cup lid - GIF
Crossing a river inside a plastic bag - GIF
Plastic water jug molding machine - GIF
Recycling plastic bottles into brooms - GIF
Recycling plastic into pellets - GIFs
Vegetable plastic bundling machine - GIF

I have tried this, and the hardest part is getting the same plastic as the item being repaired. It is kind of like welding, but plastic can get out of control very easily (sag, overheat, etc.). I did this with a HF plastic heat gun and scraps of the plastic I was working on. The plastic had punctures from a fork lift that I was trying to close up. Have to work slow and let things cool rather than keep going...