I've got a glass box that measures 900mm x 450mm x 450mm.
The width of the glass is about 6mm thick.
If I drill, cut, or grind a small hole in/through one of the faces; will it significantly affect the structural integrity of that piece of glass?
I'm concerned it might become prone to flexing, and cracking; if I pick it up to move (or transport) it, for instance.
Is there some kind of ratio, or formula that I can use to determine a relatively safe size, and adjacent edge distance for an aperture?
If you're wondering: It's basically a small indoor display garden / vivarium type situation, which needs at least a single outlet point through which gravity can be allowed to drain the excess fluids from the soil.