[jaidexl]

Of course, you are welcome to chime in even if you're not a builder but still have some knowledge to share.

Here are a few of the questions on my mind at this point...

1. Bulkhead hole size? How far in from back glass to allow for BH fittings?

2. With 3/8" glass, is it exactly 3/8" subtracted from the edges of insetting panes and bottom glass? (will be a floating bottom)

3. Is it necessary to edge the corners of the bottom pane even if it's floating? Will the bevel add any strength to the bond or is it wiser to maximize the contact area by not edging/beveling the edge? (all seams will be pressed with black GE RTV between) My glass cutter adds a nice rough texture to his edges somehow, which I imagine can assist the bond, might it be wise to do this to the bottom pane as well if I decide not to bevel it?

4. It's been said elsewhere to not press all the silicone out of the seems. How small of a gap is too tight, 1mm, 3mm, more or less maybe?

5. Is 3/8" glass sufficient for allowing adequate contact area at corner seams while keeping bowing at a minimum on an 18hx24L" pane holding ~40 US GL? Would 1/2" glass be overkill?