making a V-shaped slot to accept the repair. The next step is to create a mold. To do that, he takes a piece of plastic and uses hot glue to secure it near a good part of the gear. Then ...

When you need to repair a broken plastic container, sculpture, tool, or another item, what's the first mending agent you reach for? If you said "super glue," you are not unlike most people.

Now [Inventor 101] has a video about plastic repair that also talks about welding ... the other post we saw someone using zip ties and a glue gun to “weld”, you’ll have a bit of reading ...