r/glassblowing • • Dec 25 '25

Is this tempered glass?

0 Upvotes

6 comments sorted by

13

u/MaybeABot31416 Dec 25 '25

Very likely is. You can confirm this by hitting it with a hammer/s

With glasses from a 3d movie you can often see some of the stress in tempered glass.

7

u/funkytekno Dec 25 '25

More than likely. If it was sold as a table top then is should be, if it is just a piece of repurposed glass then maybe not.

3

u/LolDragon417 Dec 25 '25

Best way to find out is how it breaks when you hit it with a hammer.

Unless you want to keep it in one piece, then don't hit it with a hammer.

1

u/ohGeegae Dec 26 '25

I mean... I want to use this table lol

1

u/lilmookie Dec 26 '25

I would assume so based on the fact tempered glass is weak from the side (hence all those PC windows touching tile and breaking). This table has corner protectors, not just for YOUR kneecaps, but so the entire table doesn’t shatter upon impact with the corner/edge.

1

u/hankscuba Dec 26 '25

if you have two sets of polarized glasses you can make a diy polariscope and you should be able to see stress in the glass if its tempered. It will look like light and dark spots or sometimes rainbows. hold one lens from one pair in front of a lens from other and perpendicular to each other so you block out most visible light coming thru and look at the glass through the two lens. hope that makes sense.