these stupid cracks are growing too fast! How to slow 'em?
well, I've driven probably close to a couple hundred miles since the last log... actually probably more, since I've a tendancy to backtracking and overshooting...
the big crack has grown about a centimeter, but the others haven't...
So, in interest of science, I guess the best I could do is exclude the big crack from the experiment, leave one little crack as a control, and experiment with the other.
But, in interest of needing-a-fix, the big one should probably be tackled first.
The dollar-store probably shouldn't be the go-to for things like this, but I'm often surprized what they have... but no "hot" superglue, as suggested by @Morning.Star only the regular stuff. Apparently "hot" cyanacrylate(?) is a thinner version of superglue that might flow into the crack, and is designed for non-porous surfaces like glass.
I am, however, a little concerned about injecting anything into the crack, as it seems like any expansion, or even contraction, would aggravate it... but that's probably silly, since it's already dealing with 'turbulence' daily, and more.
@Jarrett suggests drilling a hole at the end of the crack, filling that with epoxy. The idea, I think, is somewhat akin to cutting circles at corners of acrylic. Makes a lot of sense to me, but allegedly requires a special drill bit that might cost as much as just hiring a shop to do the job...
I do have cheapo 'diamond' rotary-tool bits, several in a package for $10, but haven't quite wrapped my head around whether those diamonds are large enough to introduce *new* scratches that could turn into cracks... Kinda like using 40-grit sandpaper for polishing?
Also, I do assume (maybe wrongly) they'd be capable of grinding their way through the glass, I kinda doubt I'd be able to plunge straight through. It'd be a hole, sure, but probably not circular, and probably not with vertical sides... which mightn't matter, since we'd be talking about filling it with epoxy anyhow.
epoxy-filling I like, though, 'cause it's kinda like "How yah gonna fill a vertical hole without it running out the bottom?" Wherein we introduce one of my favorite self-discoveries of all-time (right up there with shoving strips of hot-melt glue inside heat-shrink)... friggin' tape, yo! tape+epoxy... nice smooth surfaces, fillets, wee! Once the epoxy hardens, the tape peels right off, leaving a smooth transition from the original surface to the epoxy... (as long as you get out the bubbles).
Did a bit of driving today... and... the cracks haven't grown! So, I guess, the rattling was pretty hard on 'em.
"In the interest of science" I think I'll try the epoxy idea... but I'll wait until after payday, just in case somehow it makes things worse.
So, this serves two purposes... first, if it makes things worse, I'll be able to afford a replacement (hopefully) ASAP... Second, it gives me a few more days to verify that the cracks are no longer growing on their own, in which case, if the cracks grow after the epoxy, it might be safe(r) to assume that it's due to the epoxy... I guess we could call it a "control", of sorts... Though, in that light, there are *three* cracks, maybe I should epoxy one or two, and leave a *real* control.
Note that the only epoxy I've got is regular ol' cheapo 5-minute stuff, not something designed for glass... Epoxy is what they use to fill rock-chips... but I imagine it's probably specially-formulated. (Also, it's pretty durn cool *how* it's injected... a vacuum sucks out the air, first, then the epoxy is sucked right in.)
The front driver's side tire was worn down to exposed steel-cables on the inner-side wall. I first noticed over a month ago, and only yesterday replaced it, right before what coulda been a major blowout on the freeway.
The result: a bunch of shaking, i'd considered normal for almost as long as I've had the van, has pretty much vanished. Could it be all that shaking was due to the wall of the tire?!
The window-cracks grew nearly three inches in the day before the tire-replacement, and haven't grown a centimeter, since the replacement.
Maybe I've lucked-out?!
Still pondering epoxy. Maybe just a dab/blob *past* the end of the cracks, so any strain it might cause will be to solid, rather'n cracked glass.
A tree fell on my hood a couple months back. I was quite blessed in that the only damage it did to the functioning of my van was a crack in the plastic portion of the radiator. I was able to fix that with epoxy (and a hammer, to realign the bracket).
The windshield, at that time, was completely unscathed... a major blessing.
However, the tree-damage was surprising, as far as to the van's structure around the hood... so it's possible this new crack may be the result of ongoing strain, late fallout of the tree-incident.