How to repair cracks in glass
On the car market and in all shops auto cosmetics kits for such works are sold. This includes a special transparent glue, in which the refractive index is close to glass, a set of some plates and a drill with a diamond tip.
If cracks have gone from the "asterisk" to the sides, then it is necessary to prevent their growth. To do this, at the end of each crack at a distance of 1-2 mm in the direction of the development of the crack, a maaaa scarlet is drilled ... how to say ... a hole, but not a through one, but only up to the first layer of triplex, so that the outer layer. With a light tap on the glass, the crack is brought to this hole - and that’s it, it will not go further.
Then processed asterisks. Somehow they are reamed there, so that there are no crumbs left.
After that, all the holes, "stars", as well as cracks are smeared with glue, the attached plates are glued on top, and the process of drying the whole thing begins. Drying is necessary under an ultraviolet lamp. Even in direct sunlight it turns out badly.
After drying, the remnants of the plates are cut off with a blade.
Correctly sealed cracks will be visible only at a certain angle in sunny weather.