On the way home from Michigan I got wacked by a rock from a gravel truck. Couldn't get the name of the truck before he exited so I have a quarter sized crack to deal with. I got the kit with the epoxy and application tools, but the crack seems to be all internal. On the outside I can feel a tiny hole and on the inside I can't feel anything, yet the shattering is about the size of a quarter. I don't see how the epoxy is going to do any good without some kind of crater to fill. I'm still planning on waiting for Steve to get back down here because he has experience in this, but wondered if anybody has any insight for me.

as one who has ignored " chips" like you have in far less expensive windshields only to see them grow , and one who always " does it himself " ; i would slowly and carefully take the coach to a specialized auto glass shop asap and have them fix it . if there is only a 20% chance they can do a better job than you , it is still worth the cost .

spend the money and drink cheap beer for a month or two to pay for it .

I think the epoxy needs to be pressure-injected thru the hole into the crack web, not just applied to the crater. Glass shops use a hypodermic-like plunger with a suction cup at its end, AFAIK. If you have glass insurance, sometimes they will cover the crack repair for free, rather than pay for a new windshield. Also some glass shops do housecalls for windshield chip repairs.

With your luck on broken windows, you might want to consider bullet proof windows.

The crater is usually not the problem, the radial cracks often continue moving out.

The usual repair involves attaching a plunger or suction device to the chipped area. Suction is applied for 20 minutes or so to remove as much air as possible.

A small amount of watery thin resin is added to the plunger. The plunger is pressed in and locked, for 20 minutes more of pressure to force the resin into the cracks.

The plunger is then removed. A small amount of resin is added to the crater and a plastic membrane is laid over the crater to smooth it.

After a few minutes in the sun the resin is cured. The plastic membrane is peeled from over the former crater. Done.

I have had good luck at stopping the cracks from growing. Sometimes the crater is still visible, but better.

It is wise to repair as soon as possible. If water gets into the tiny cracks it may prevent the resin from filling the cracks.

Hey Danny we should be in Florida on the 12th or so. See you soon.