Reply by CharlesNeil

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Posted on Finish for Walnut Slab Coffee Table

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2411 posts in 3898 days

#1 posted 02-10-2012 06:17 PM

Pittsburg, Sorry I missed your main question, yes poly will go over epoxy, but sand the epoxy, to give it some tooth, on slabs for filing I prefer the pour on products, because they dry slow and clear,and because inside the slab there can be fissures, that a simple suface filling doesnt get, so what I do is tape off the bottom if its all the way thru and fill the void, watching it becasue it can seep down, as the epoxy migrates into whatever issues may be inside, I also often like to use the pour on as a sealer, what I do is basically coat the slab, top and bottom, because this will encase the slab, and pretty much stabilize it and have it retain its moisture content, and thus, it will remain as is, as a sealer it will not look too good, but then I sand it smooth and topcoat as desired, while most of the pour on products are epoxies, many of the box stores and craft stores sell a product called “enviorlite”, I have seen and got it at Lowes , its a polyester, and much cheaper, and from my experience, has worked fine, just dont mix it with an epoxy, after you sand it , obviously it will be very dull and lack luster, but your topcoat will bring the sheen and clarity back, you dont want a oil finish over it, as it will seal the surface and not allow for penetration, but the poly or lacquer as mentioned, will do fine, hope all this makes sense,

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