building a glass tank

What size of tank do you want to build?

There are some web pages that calculate the size of glass you need based on gallons.

If it is going to be a standard size then it would probably be cheaper, in the long run, to just by one roughly the size you want.
If you want to go ahead and do it just because you want to, then by all means go ahead.

Please see the following web sites to help.

http://www.austinglass.com.au/aquariums.html
http://www.fnzas.org.nz/articles/technical/glassthickness

Otherwise, PM me and I can help.
I have built several tanks and can give you tips if you would like.

However, don't ask keodog how well I do on patching large tanks, he might give you a different oppinion.

I recently built an acrylic tank, but I played with the idea of a glass tank.  I found that the small stores that specialized in glass were much cheaper than home depot for glass, I felt more comfortable with them cutting the glass, they had better selection (tempered vs non) and they had the ability to drill the glass if you want.  Just a thought.