How to restore a plastic gear
In today's time, there are a lot of mechanisms around us that use plastic gears. Moreover, it can be like toy cars, and quite serious things, for example, an aerial lift in a car, a spinning gearbox, and so on. The reasons for the breakage of the gears can be different, of course most of them are associated with improper operation, but now this is not the case. Since you are in such a situation and you broke a couple of gear teeth, then there is a way they do not pay for an expensive item, but to restore it in a simple manner.Make such a peculiar knob.Put the gear on the improvised stand, in order to glue even more thickened. All again, individually, it took me about 20 minutes to make the consistency noticeably thicker.You can speed up the reaction and shorten the thickening time by heating. For example, take a hair dryer and start heating the glue on the gear.In this simple way you can quite easily restore broken gears.
You will need to restore
- Waste toothbrush
- Two-component epoxy adhesive -.. cold welding for plastic
Restore plastic gear
PreparationFirst It is necessary to prepare the surface of the gear. We wash it repeatedly in warm water with detergent, actively working with a toothbrush. Our task is to degrease and remove grease from all facets. After the degreasing is done, dry it dry.
Prepare the glueNow prepare the glue. Mix on a small piece of cardboard components in proportion as in the instructions. Mix well. Generally, before opening the glue, I recommend that you carefully read its instructions, especially with the time of complete and partial hardening, as different manufacturers may radically different data. If the consistency is liquid - let it stand for a while until it starts to harden.
Repairing teethIn my case, several teeth have been cut off, the situation is correctable. We smear glue on that place which needs to be restored. The glue should be very thick, but plastic.
Repairing teethNow the most crucial moment is rolling the teeth. The knot where the gear was operated, namely the other gear with which our broken one directly came in contact, it is necessary to lubricate it with plenty of grease, grease or lithol. Install the broken gear and roll several times around the other.
HardeningGently remove the reconstructed from the mechanism and leave it for final hardening, usually for a day.
How to replace epoxy glue?If you did not find the glue , I can recommend a slightly similar composition. To do this:
- Epoxy resin with hardener.
- Dry cement .
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