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Anyone know if the Jessem PHENOLIC MAST-R-TOP™ is solid phenolic or is it phenolic laminated to MDF

The Jessem description says it is "laminated phenolic". Whatever that means

A good indication would be to look at the inside of the router plate cutout - does it look like MDF on the inside or does it look like phenolic. I would do this myself but with covid and all, can't get inside a store to take a look.

Background: I recently purchased and INCRA MDF router top and found it to be out of flat by 1/16 inch (front edge sagging down). I understand phenolic is more stable than MDF so was thinking of giving that a try.
 

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I would say it is a thin phenolic laminate to both side of a ply/mdf core. There are many table tops like on the market.

I doubt it would be solid phenolic due to cost.

Phenolic plywood is somewhat of a misnomer as it should more realistically be called “phenolic faced plywood” or “phenolic covered plywood.” The veneer core plywood itself isn’t made of phenolic; it’s generally made of birch. What makes it “phenolic” is that both surface veneers are soaked in phenolic resin before attaching them to the plywood. This creates an extremely stable, smooth, durable, highly water resistant and attractive surface.

These face veneers can either be wood (normally birch), like the core veneers or a thick paper. In either case, they are limited to the core plys under pressure, creating a permanent bond. The actual material doesn’t matter so much, as it is merely the carrier for the phenolic rosin. A thick layer of this is not necessary, as it is nothing more than a coating. If a thicker layer of phenolic were to be used, there would be no additional advantage.

Some people refer to phenolic plywood as “resin impregnated plywood,” although this is an inaccurate description. The only layers of the plywood which are resin impregnated in phenolic plywood are the two face veneers. All the other layers are normal hardwood veneers.
 

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I doubt it would be solid phenolic due to cost.

Phenolic plywood is somewhat of a misnomer as it should more realistically be called “phenolic faced plywood” or “phenolic covered plywood.” The veneer core plywood itself isn’t made of phenolic; it’s generally made of birch. What makes it “phenolic” is that both surface veneers are soaked in phenolic resin before attaching them to the plywood
That was my first thought also, I'm guessing it's made out of something like concrete form board material.
A local supplier near me carries a product called Xtra Ply PSF that's used in the concrete industry for forms.

Doug
 

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If I was going to make a large router table these days, I would use that Xtra Ply or BB ply and laminate it with Laminex.
 

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laminate it with Laminex.
Haven't heard of Laminex here in the USA, it may be an Australia brand?

I've thought about using the Xrta Ply that has the phenolic coating on both sides, but the last time I checked on the price of a 4' X 8' sheet (only way it's sold) it was around $200. That was several years ago, so I imagine it's much higher now.

Doug
 

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Hi @dwall174 ( Doug), may be Formica in US? Similar product...
 
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