: I have been using epoxy, thickened a little with west systems micro balloons
: (white)and a couple of pinches of saved up saw dust (from cutting my
: plywood panels) to thicken it up. I grind up the saw dust as fine as I can
: using the wifes coffee grinder (she doesn't know about it yet).

Good things that she doesn't know. She would go off on you -- mine definately would.
You really should not grind plywood saw dust in a coffee grinder if you plan to use it for coffee again. The wood is OK but the glue.....