We’ve seen several methods of repairing plastic gears. After all, a gear is usually the same all the way around, so it is very tempting to duplicate a good part to replace a damaged part. That ...

Plastic is really hard to fix. A new class of smart plastics can heal breaches all on their own, to mend cracked phone screens or stitch up airplane wings.

We replace the stripped actuator gears in our 2000 Chevrolet Corvette project car's pop-up headlights with replacement brass gears - Vette Magazine ...

Plastic That Can Repair Itself Researchers at the University of Illinois are developing material that will “bleed” to heal damage on hard-to-repair objects.