Great information. 8) I actually know someone who does stain glass and I will ask the glass company, I bet they sand them as well. I was just thinking that exposed edges would be more fragile and subseptable to chipping/cracking.
What I am thinking about is first building a top and bottom frame with some nice trim wood to include some middle cross supports to stabilize the sides and support the bottom. I would them stain and seal the wood frames prior to assembly. I will use a router or saw to cut slots for the glass to fit into which should make assembly a lot easier as well. With this plan the bottom would be slightly elevated probably about 1/4".
I am very curious to see how much glass costs. This might be a cheaper way to obtain the 120g I have wanted and make the sales pitch tho the financial manager(wife) a lot easier
. The best price I have see for a 120g tank only is about $300.