The wood is sealed to the glass with silicone only. There most likely
is or was a foam tape type cushion on the very outer edge of the glass,
itself. This foam, when initially attaching the wood to the glass at
the factory, assists in minimizing silicone squeeze-out and clean-up
When removing the original wood, if you haven't done this already, use
a box knife with an extending blade, that extends 2", 3" is better.
Extend the blade and cut the silicone between the wood and glass.
Don't force the cutting of the silicone.... go nice and easy, a little
at a time. Too much pressure and you can break the glass. It is easier
to break than you may think when working near the edges. Don't try to
pry up the wood from the glass. This can result in breaking of the
glass, also. You just have to take your time and cut the silicone to
detach the wood from the glass. This will take a long time to do, so
be patient. Clean up the residual silicone with a straight razor blade.
There is a sealing material (a band of material), at the edge of the
glass panels, that attaches the 2 panes together and seals the argon
gas between the 2 panes. Be careful not to damage that inside seal,
otherwise you may loose the vacuum between the glass panels. Don't
store the unit (glass panels) on edge, if you need to delay work on the
project. A slight chip of the edge of a pane may cause it to crack,
later, if an unusual bind is placed on the unit during work on it.
That vacumm glass is tender, so be careful and don't abuse it while the
edges are exposed to potential damage. If you have some old carpet,
use that as a work surface on your work bench. And once the panes'
edges are exposed, be careful not to nick it with a haphazardly placed