Look at this site for paper-based phenolic:
Phenolic high pressure laminates, carbon fiber & laminated plastics - Current Inc.
Look at my build for how I hope to solved sagging table top problems with closely spaced aluminum cross pieces; see especially entries 1, 26 and 27:
http://www.cnczone.com/forums/cnc_wo...ized%5D-3.html
I am contemplating not using a table at all, but using a variety of sizes of vacuum pods and large rectangular vacuum chucks. I have seen a number of high-end high-speed production CNC routers that do not have a table, just vacuum pods. You can see them in this video:
The five-axis CNC router in the above video is about 1/4 mile from Long Island Sound. No air conditioning in the studio as the studio is about 5,000 square feet in an older mill-style industrial building [more holes than Swiss cheese!].
My studio is 1/2-mile from Long Island Sound, and humidity in summer runs 80 to 100-percent with temperatures 75 to 100-degrees Fahrenheit at midday. No air conditioning [even though it is a two-year old building]. The overhead door and entry door both face west with a scenic view of a black topped parking lot and another metal building across the parking lot. I am there from 7:00 AM or so until twelve-noon or so and come back around 8:00 PM for a couple hours. Both my CNC routers are there all the time and thier steel parts, and the cast iron table tops on the other woodworking tools, get waxed a lot, though still show rust, as do my planes and other hand tools on occasion no matter how much I wax them.
Louis knows all about working in damp places as he works in a dank subterranean space with large spiders. Supposedly he makes nice guitars, but I gotta wonder what he is REALLY doing down there!