Damage to glass tank corner

[Ross]

I would like to see what the consensus is about this damage. The tank is a waterbox 6025. It does hold water with this damage. I’m considering buying it, but want to get some opinions before I make a decision.

 

[Hishman]

I’d be less concerned about the corner as you can use diamond bit to shave it flat no problem. The issue is the damage right next to the caulk on the other pane of glass. It would be more difficult to shave that flat but it could be done by perhaps coming in at a 45 degree angle then filling the removed portion with caulk.

Glass is a type of material where if there is a tiny fissure it creates opportunity for that fissure to continue. The same material property allows you to score glass and break it off. Best practice would be using a diamond bit to shave them smooth.

If you think about it, cutting holes for a bulkhead are far more aggressive. But those holes are nice and smooth. I’d be curious other’s thoughts but I don’t see any problem if you clean up the damage

 

[UncommonSense]

I would like to see what the consensus is about this damage. The tank is a waterbox 6025. It does hold water with this damage. I’m considering buying it, but want to get some opinions before I make a decision.

That’s a crazy chip!! I’m not surprised the tank still holds water though… I’ll defer to those with more experience in the department of corner chips here; it would make me sleep uncomfortably if I didn’t add some kind of internal reinforcement at least to that area…

What jumps out to me is how the tank isn’t fully on the stand in that chipped corner… — possibly see about getting a good look at all the silicone seams too…

 

[vetteguy53081]

I would like to see what the consensus is about this damage. The tank is a waterbox 6025. It does hold water with this damage. I’m considering buying it, but want to get some opinions before I make a decision.

Its the outer corner away from water pressure and a good risk

 

[Hishman]

What jumps out to me is how the tank isn’t fully on the stand in that chipped corner

That’s not really how force is being placed on the glass. The only downward pressure is the weight of that single plane of glass and 99% of that is placed on the caulk joints.

The corner has almost no “load” downward but the seam has considerable PSI from the weight of the above water column whether its supported or not. It’s trying to push perpendicular outward. Not downward

 

[UncommonSense]

That’s not really how force is being placed on the glass. The only downward pressure is the weight of that single plane of glass and 99% of that is placed on the caulk joints.

The corner has almost no “load” downward but the seam has considerable PSI from the weight of the above water column whether its supported or not. It’s trying to push perpendicular outward. Not downward

Semantics aside, this is correct!

I was moreso eluding to the fact that the tank was carelessly placed, which can lead to joint issues for a number of commonly related reasons…

 

[Ross]

I’d be less concerned about the corner as you can use diamond bit to shave it flat no problem. The issue is the damage right next to the caulk on the other pane of glass. It would be more difficult to shave that flat but it could be done by perhaps coming in at a 45 degree angle then filling the removed portion with caulk.

Glass is a type of material where if there is a tiny fissure it creates opportunity for that fissure to continue. The same material property allows you to score glass and break it off. Best practice would be using a diamond bit to shave them smooth.

If you think about it, cutting holes for a bulkhead are far more aggressive. But those holes are nice and smooth. I’d be curious other’s thoughts but I don’t see any problem if you clean up the damage

I’m with you, the smaller chip in the other piece of glass is far more worrisome to me. I’d be concerned that it could expand and crack.

 

[jsmkmavity]

I would pass.