Polyurethane is a durable clear sealantavailable to the woodworker. It is sold at home centers and comesin wipe-on on normal varieties. It can be recoated in 4-6 hours. Ittakes at least 3 coats of polyurethane to produce a reasonablefinish. Often several more coats are applied to achieve a highclass finish.
True Polyurethane is oil based. The water based variety is arelatively new product. This article is derived from experiencewith oil based polyurethane.
The normal variety of polyurethane is thicker than th
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