Windscreen stoopid(?) questions....

[decryphe]

(04-29-2024 07:55 PM)Mylesmck Wrote:  [...] Here it says to prime the glass, ok, but then wipe it off before it dries?!?!?! [...]

It's not uncommon for primers to work this way, it will wet the surface, leaving primer molecules attached to the surface. Wiping off any excess ensures the glue is bonding to that single layer of molecules that sticks to the metal. Primer molecules probably don't bond to each other, which means that a thick layer of them would simply make the window not stick to the car. This depends on what chemistry you're using to glue the window.

Think of the primer molecules like having two ends with different shapes, hooking into different other things.