We restore a plastic gear with our own hands
On the side surface of the gear we mark the sector limiting the broken teeth and select material from it using a drill.
We solder a paper clip without bends into the formed groove at the level of the middle of the teeth using a soldering iron.
We enclose the required number of whole teeth of the gear, fixed in a horizontal position, with a curved thin plastic plate, the height of which coincides with the width of the ring gear.
From the outside, we fix the base of the plate with glue from a glue gun to fix it and seal it.
Pour molten paraffin into the area formed between the gear teeth and the curved plate.
After the paraffin has cooled and hardened, remove the plate, cardboard base and glue. The result is a paraffin mold that geometrically reproduces the missing gear teeth.
We place the paraffin mold over the broken gear teeth, and also secure it on the outside with glue.
We alternately pour powdered graphite and superglue (cyanoacrylate) into the resulting form, constantly mixing these ingredients using a metal wire.
After filling the mold with a homogeneous mixture of powdered graphite and superglue, and leveling the surface with the tip of a flat-head screwdriver, leave everything alone for 24 hours. During the specified time, complete hardening and strengthening of the restored gear teeth occurs.
We wash off the remaining graphite powder, smooth out the roughness with fine sandpaper, install the restored gear into the mechanism and make sure of its strength and full functionality.
