I agree with zapdafish. The phenolic has not been worth the trouble and the added difficulty such as weight(see below) and it's unnecessarily indestructible toughness. No matter how slowly I go in tiny depth increments, my router bits tend to heat up much more so than with hardwood. My Skil saw labors under the burden and, again, I have to go very slowly. If I could have forseen these things, I would have gone with two thicknesses of 3/4" maple plywood, basic polyurethane, with sanding after each coat. But I have it now, and it will be my outfeed table (7' X 8') until I ride out into the sunset. My children can curse me then for the immovable object in my basement.
By the way, the weight comparison is as follows:
Pure phenolic 8 X 4 X 3/4" 170 lb.
Maple plywood (same dimensions) 69 lb.
My 8' X 7' table top, phenolic on a maple base, weighs in at about 430 lbs. That's not counting the four oak legs, apron, and the three 7" I-beams.