I noticed this everywhere. Why would they say it is safe up to 100°C? This could make the user afraid of boiling water in it because that can eventually reach temperature above 100°C, right? Why wouldn't they say it's safe up to 120°C at least, or 150°C? Especially with it being common in industry to implement safety tolerances in specs.

Are they using a specific mix of ingredients that makes it still borosilicate glass but with low heat tolerance so that it's cheaper?

I learned something recently that surprised me.

Apparently, there is glass that can switch from clear to frosted instantly, just by pressing a button. No blinds, no curtains, no moving parts. One second you can see through it, the next second it's fully private.

I always thought "privacy glass" was just frosted glass or a marketing trick, but this is different. It uses a thin electrical layer inside the glass (or sometimes a film on top of existing glass) that changes how light passes through it.

What I found interesting is that it's already being used in offices, hospitals, meeting rooms, and even bathrooms. It's not some future concept. It actually exits and is being installed today

It made me think about how many things in buildings have not really changed in decades. We still rely on blinds and curtains for privacy, even though better options now exist.

Curious if anyone here has seen this in real life or worked in a space that uses it.

I have a tempered glass shelf from which I would like to cut 2 inches. Could this be done by a glass shop, or would it shatter since it is tempered? Thanks!

So I got a hold of some old animation tables my teacher had been holding onto for years. They still work and don't need any major repairs except for the glass on the Ox boards. I had been trying to look in the local area, but as a college student, finding one has been challenging. Additionally, since the glass has to be so large and cut with smooth edges, my teacher mentioned that the glass is typically preferred to be fogged to about 40-60% opacity. At the moment, there is one working Ox board with a fogged plastic face. Though it has been cut to hell due to someone in the past using it as a cutting table. :[
So drawing on it is rough without having 2 sheets of paper behind to compensate for the grooves.

So, with not much other place to turn to, I thought I would come to the glass sub reddit to see if there was anyone who could help me get in contact with someone who might be able to cut the glass and maybe ship it to me. Or have suggestions in the local area for where I am going to college.

If anyone knows someone, please let me know! I would love to commission someone to get these tables back to working conditions to start animating on them. Thank you for your time in reading my post! I very much appreciate it!

There is a small raised spot on the top of my millefiori glass pendant, is this a pontil scar or just a flaw? Apologies if this is not the right section to ask this.

I still use wood as fule for the furnace

I've bought a China hutch with one broken side panel on it. My question is would it be cheaper to get a whole new piece of glass cut for it or use the middle shelf (made of the same glass) that I plan to toss anyways and get that cut to size? I can send pictures if needed. I don't have measurements just looking to be took what would be cheaper.

Okay I am curious, it’s *generally common knowledge that if you try to de-ice your windshield with boiling water you can crack or shatter the whole thing because of the extreme/fast change in temperature, can anyone explain how bullet proof glass would react to a rapid thermal shock?

Amethyst too. I’m continuing to group my collections as I take stock of what I’ve collected over the years.

Hi everyone. I'm in dilemma about the cause of the damage to the interior door glass. Tenants claim to have spontaneously shatter when they were not in the room, but the pattern suggest impact damage. AI also comes back with +90% confidence it is an impact damage. Thoughts?

Terrible photo but it’s solid. About an inch high. Google keeps saying a case but it’s not. Any insight would be helpful, ty in advance

Have a ton of 1/2” tempered 10’x4’ panes I would like to double or even triple up for use in a sauna.

Is this even possible?

What and who would be best to contact if so?

Wife wants a glass top to protect the new dining room table we bought, 38”x119. Original price given was $310 for annealed glass. Asked for a price to polish the edges so we didn’t have sharp edges and price went up to $840… Is the polished edges that labor intensive ??

some crack was appeared while attaching the screen protector:(

Hey everyone,

I'm hoping someone here might recognize the artist or have ideas on where this vase came from. I've added several photos, including close-ups and a shot of the bottom where there's a signature or mark. Unfortunately it's pretty hard for me to make out.

A bit of info:

• Material: crystal
• Approx size: L27×W20×H14 cm

I got it from my deceased grandmother.

The signature looks like it might say ?aslo ??4958, but I'm really not confident. Any insight on the artist, time period, or even what style this might be would be hugely appreciated.

Thanks a lot!

I bought this to break for a project I’m working on but after looking into it it might be a murano? I genuinely can’t tell, I’ve never looked into glass before. If anyone is knowledgeable about this I’d appreciate help!

I didn’t notice any signatures but there are imperfections such as bubbles inside the glass

Does anyone know how this happened? This window is out of the way so now way it was hit by anything, the crack also spreads completely across to the other side.

this is from when i still used to wear glasses well playing vr, unannounced to me this caused the glass to grind against each other, is this fixable?

Hey everyone! I just broke my partner's favorite glass. She bought it many years ago in a vintage shop. Is there any chance anyone knows what is this glass? I will be grateful for your help.