I found a repair product called Q-Bond while surfing YouTube… see video links below… and it looked like it worked so I purchased a kit. Q-Bond is essentially super glue along with filler material. The two together work very well.
Over the last few months, I have used Q-Bond to make several repairs. I repaired the door-pull on my pickup truck door, the air conditioner control knob on the dash and a toilet flush peddle along with several smaller items.
I am a slow learner but so a couple of the repairs didn’t hold the first time but, after a little more thought, and another application, I now believe the repaired parts are probably stronger than the originals.
In making my repairs I learned it is best to apply the powder and adhesive in thin layers when trying to build up reinforcements or fill in holes. If you try to use too much powder the adhesive will cure on the surface and you will still have powder underneath. Of course, you need to clean the surfaces of the part before applying the Qi-bond.
You should avoid breathing the fumes when applying the adhesive they are noxious. Same goes when sanding or grinding the cured adhesive.
Also while watching YouTube, I learned that others use baking soda and super glue to make the same types of repairs. I tested this… I have not ‘repaired’ anything… and it does seem to work. But the q-bond is affordable and I know it does strong repairs. And I’m still using the same original kit.