Since we're searching for low cost sources (and having some success) what about suppliers for sheets of phenolic for something less than the price of gold? I don't see why it should cost $25 to $50 to make a silly zero-clearance table saw insert or a router plate.
There have been several occasions where I've gone into a public bathroom and found that the stall walls were made of solid 1/2" or 3/4" phenolic sheets; certainly others have seen this too? There's no WAY these sheets can cost anywhere near what the woodworking supply companies are sticking us for router plate material; it would cost upwards of $5000 just to put a few stalls in a bathroom! Any ideas?