Air Bubble in Glass

[30WCF]

I was cleaning my glass and I suppose this is the first time I’ve noticed this with the light hitting the window just right. There appears to be an air bubble in my window. I can’t feel it from the outside. I can’t get my fingernail to catch anything either.
Probably been there all along I guess. Anything to worry about?
I’ve had this stove cooking at 700-900 STT a few times.

In the last two pics, it looks like a splinter in my fingertip. The first pic has the outside light from the front door being open and making it “glow”.

 

[Tech Guru]

Not likely an issue. Ceramic glass can have a lot of inclusions in it without compromising the strength. Takes quite a beating when used form a glass cook stove top, when you think about it. Far worse than any typical use on a woodstove would likely cause.

 

[stoveliker]

On the other hand, a bubble (while having rounded boundaries, this one looks "shar" tho) will weaken the glass. Safety margins in mechanical properties should be large, but why "use" some of that margin in a production fault.
I've not seen this mentioned before, so it seems to be rare.

I'd ask VC about this. I mean, what's the worst that can happen - they send a new window..?

 

[30WCF]

I sent them a note on their contact page.

 

[30WCF]

They replied and asked for pictures. I sent them more and better pictures than I had posted here.
They said it is not anything to worry about due to its size and location.

 

[stoveliker]

Okay. I'd say the same
The company can always invest (replace the window) when it's needed rather than preventatively now.

Do keep the correspondence, just in the off-chance (very small, likely) that something does happen.

Happy burning!

 

[30WCF]

I’ll keep an eye on it. They did say that it wasn’t an issue since it wasn’t close to the edge. I suppose “close” is a relative word up to interpretation.