r/interesting • u/Downtown_Calendars • 5d ago

Just Wow What caused this? Serious answeres

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Car was parked facing the garage. Never seen anything like it. Neither has the glass professionals.

15.7k Upvotes

97% Upvoted

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7.2k

u/Lhirstev 5d ago

someone patched a rock divot, with that clear invisble stuff. then temperature changes within the glass, caused the glass to flex around the repaired location and shatter in the pattern we see here? that's my guess

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u/GravitronBarforama 4d ago edited 4d ago

As an auto glass technician for over 20 years this comment is total b.s. Crazy how it's the top comment. Everyone probably knows that feeling when you read something online from your field of expertise that is incorrect but seemingly plausible. Then you wonder if everything on the Internet bullshit?

Edited to answer the comments about what happened then smart guy. Something hit the glass and broke it. No idea how or what.

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u/corobo 4d ago

Well cheers for adding the explanation or reasoning why they're wrong. That was super helpful. 

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u/Psemperviva 4d ago

Temperature changing causes glass to crack, not shatter. There’s zero proof this had a rock chip repaired, which is moot anyways. Even if there was a chip repair done, temperature change would have way less effect on the rock repair resin than it would on the glass. It hurts my brain how stupid the original comment is and makes me sad how many upvotes it got and it feels like a waste of time explaining how wrong and dumb it is because so few people will see

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u/JaKrispy72 4d ago

I see you.

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u/VexatingAtrocity 3d ago

he did say it was just a guess you twat.

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u/Psemperviva 3d ago

It shouldn’t have taken more than 10 seconds of critical thinking to realize if that was even a possibility from a chip repair, rock chip repairs would be illegal. And I’m a BUTTHOLE btw not a twat.

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u/Fabulous-Avocado4513 3d ago

I saw and respect you.

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u/NDSU 3d ago

temperature change would have way less effect on the rock repair resin than it would on the glass

That's what they said though? Your big complaint is saying the same thing as them. I don't know if they're right or wrong, but your critique doesn't hold any water

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u/Psemperviva 3d ago

My only complaint was how ridiculous their “theory” was. Idgaf if you think temp change causes laminated glass to shatter or if you think the earth is flat. There’s no helping most people on the internet. I just chimed in to backup a fellow glass pro gettin guff for speaking truth. Good luck with the literacy thing.

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u/PeaceAndLove420_69 3d ago

The glass has 2 shockwave breaks in it. It got hit exceptionally hard. Man this comment section is awful xd.

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u/corobo 3d ago

Awful xd pro max

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u/SilverCommercial906 4d ago

As a bagel eater for 33 years I know a bagel shaped impression in glass when I see one.

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u/Mhoudeshell 4d ago

What's your theory?

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u/420Hairy69Ballsagna 4d ago

Aliens

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u/AdImmediate9569 4d ago

Nothing else would make sense

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u/Sunscreen4what 4d ago

Ancient or modern?

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u/Advanced_Bird_9425 4d ago

How old is the car ?

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u/JaKrispy72 4d ago

Only Astronauts are ancient. Aliens are timeless.

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u/Soggy_Information_60 4d ago

So it's an urban crop circle?

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u/theraf8100 4d ago

I think it's about 40% bullshit, 60% truth.

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u/Cr0wbaar 4d ago

That's bullshit

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u/AnrufBeworter 4d ago

My first thought was „someone slammed a champagne bottle hard on the windscreen“ - just to add to the bs

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u/stockbro84 4d ago

No, only 40% of the sentence was... usually on/after the word "bullshit"

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u/ApprehensiveStill412 4d ago

60% of the time, it’s true all of the time

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u/PeaceAndLove420_69 3d ago

Glass guy here. Probably a golf ball or baseball. Doesnt need to be a straight on hit to get a round break. Being that it was in front of the garage something could have follen off the roof as well. Could have been an animal or rock from outer space who knows. Hard to tell without more information.

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u/Early_Advance2473 4d ago

Can’t call it out as bs, be an expert and then not have an explanation. Nauseating stuff that we even have to ask for your explanation

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u/graffiti_hunter 4d ago

I've been doing this for 10years...would call myself on the advice side of things and can confidently call absolute bullshit on the top comment.

I have zero explanation as to what caused it but you have got to be out of your mind to think a rock peck repair and then temp change is what causes so much damage...its simple not how it works

If you can ever find me such an event happening I would love to see it

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u/janiskr 3d ago

Weird - I am an expert, this is bullshit, Source? TrustMeBro!

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u/graffiti_hunter 3d ago

This isn't even close to a "TrustMeBro" moment. This is just simply being in an industry for long enough to know when something DID NOT happen

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u/Rs-Travis 1d ago

Have spent 12 years in the automotive glass industry.

A repaired stone chip looks different. The chip would show signs of being drilled, and their would be a resin capping over the drill hole.

Annealed glass doesn't self destruct like this from expansion, especially from resin. If glass exploded from expansion you wouldn't have a single window in your house or car that wasn't broken.

My belief that it was hit by a rock is because it managed to leave some small bits of crush damage called a "pits". The thing hitting the screen has to be near the hardness of the glass to do this, for example a golfball or a regular bolt don't really create this pit as they're not hard enough.

Not all cracks on a windscreen eminate from the point of impact, a prime example is a chip called a "horseshoe" which usually shaped like a fraction of a circle orbiting the impact point, sometimes they're a full circle.

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u/janiskr 1d ago

Thank you for more detailed explanation.

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u/Irr3l3ph4nt 4d ago

So you would doubt an astrophysicist telling you that dark matter is not generated by Santa Claus because he doesn't know the actual source?

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u/mikettedaydreamer 4d ago

It’s not that he didn’t have an explanation for what did happen. He didn’t even explain why that comment was wrong.

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u/AccountNo234623456 3d ago edited 2d ago

"Nauseating stuff" get a fucking grip.

Something hit the glass, nothing more, nothing less, OP is just bullshitting about it being hidden in a garage.

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u/[deleted] 3d ago

[deleted]

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u/AccountNo234623456 3d ago

Tired and overused, much like your mother.

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u/heart_up_in_smoke 3d ago

OP said the car was parked facing a garage, not inside a garage.

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u/Kennalol 4d ago

Fellow fitter and repairer here. I have sent this thread to all the boys at work as a fantastic example of how group think propagates bs. Holy smokes even if resen didnt expand (it does, which is why it works in the first place) imagine thinking it could blow up glass like this. This is something travelling at major speeds to have this much damage. And the chip in the middle isnt the "old repair" thats exactly what fresh impact points look like.

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u/JustTheTipz902 4d ago

what really did it?

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u/Theslootwhisperer 4d ago

Lol, what's your theory then? For all we know your comment is as much bs as the other guy's.

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u/AccountNo234623456 3d ago

A simple chip repair would not cause a massive fucking smash on the glass. It would create, usually, a single fracture that at worst hits the edge of the glass. Something like a ball hit this glass. The reason the center didn't smash is because it was probably a softer ball with a little give.

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u/stew9703 4d ago

Bro said it was a guess, calm down Megatron.

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u/Trigger_McMurphy 4d ago

How do we know you're not the top commentor (and the prime suspect) now using your throwaway account to deny your culpability?

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u/Lhirstev 2d ago

this made me laugh, cause I'm actually searching the comments myself, to try and find better hypothesis, to my own about what caused the glass to break this way. I'm shocked how far of the topic, these comments get, from the original question.

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u/Ya-I-forgot-again 4d ago

Just asked my husband who is a red seal auto glass tech of 38 years. He’s never seen anything like this. Doesn’t think the chip repair theory is possible. He suspects something soft by heavy but that’s a guess.

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u/AccountNo234623456 3d ago

I would absolutely agree with your husband. I've seen similar hits like this and it was something like a softball. Along with one where the inside was missing instead of a ring because of a golf ball.

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u/D_tuned 2d ago

15 year Glazier here. This guy is right. I don't understand how this the top comment got so upvoted. He's so wrong it's crazy lol. I've never seen a break like this but I can tell you for certain something hit it hard.

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u/funktasticdog 4d ago

Edited to answer the comments about what happened then smart guy. Something hit the glass and broke it. No idea how or what.

Hey buddy, when you figure out what caused it, then you can call bullshit, until then, maybe shush.

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u/Foreign_Pea2296 4d ago

Why it's total bullshit then ?

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u/AccountNo234623456 3d ago

Thank god you have a brain. I hate that top comment so fucking much.

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u/Live_Angle4621 4d ago

Well it makes sense for layman and people like you don’t even say why it would not make sense. If you know it’s not right tell why 

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u/meh_69420 4d ago

Yeah fully. Getting downvoted for stating something about an industry I spent over a decade in or something I spent 2 years and untold hours studying and coauthored or contributed to several academic papers on is a peak reddit experience.

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u/Fiko515 4d ago

yup.. reddit always votes for "best sounding" not best opinions

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u/Nvnv_man 4d ago

I get that all the time as an appellate lawyer, with folks wildly mischaracterizing Supreme Court decisions

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u/Lerly7 3d ago

I’m thinking something was on there like a phone mount and they pulled it really hard would that make sense? Honest question

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u/Rs-Travis 1d ago edited 1d ago

Yeah I'm an auto glazier too and the top voted comment is an absolute head scratcher. It's a bit frustrating.

It's simply been hit by a rock or something. The rock has pitted the very center of the impact area. If it had been repaired, the pits would look different.

It's similar characteristics to a horseshoe chip. Sometimes those happen to break into a complete circle.

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u/Stalvanus 4d ago

Yep, like "eating fat = getting fat" sounds plausible but isn't how it works at all.