Is it standard to temper glass after holes are drilled?

[myst]

The reason I asked is because I just ordered a rimless 36x24x24 and they told me they have to temper the glass after they drill it. Yet I see many people on here drill the holes themselves and I assume they aren't tempering it themselves after.

[Savant]

That is correct, the glass is tempered after drilling. When people talk about drilling tanks it almost always pertains to the back or side glass. The bottom glass is almost always tempered while the side and back glass is rarely tempered, but you always need to check before you drill because there are tanks that are tempered on all sides. HTH

[r-balljunkie]

nah,

you can drill your own tank...no need to temper afterwards. this particular tank manufacturer MAY temper the tanks glass, but i wouldn't say its an absolute requirement.

[slipknottin]

Tempered glass can be thinner than standard glass.

Drilling is not related to it. If the tank comes with non tempered glass then that glass is thick enough to be safe.

The only reason tanks are drilled before tempering is because they can't do it after.

This whole post probably makes no sense, but to summarize. If you have non tempered glass, you can drill holes in it and have no worries about it needing to be tempered. It doesn't. That's why it was non tempered glass

[myst]

Ah okay thanks. Just making sure there was no downside to it other than not being able to drill more holes

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[Savant]

Tempered glass is much stronger than non-tempered glass. This is the main reason the bottom plates are tempered. And you are correct the only downside is that you cannot drill it after tempering

[thegrun]

Many manufacturers temper the bottom glass to save money since they can use thinner glass by tempering it.