For an overview of choosing a finish please refer to “How to Choose a Finish: Part I.” To better understand finishes and their differences, it’s very helpful to put them into categories by the way they cure. You may think the resins—polyurethane, alkyd, acrylic,...
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Polyurethane Won’t Dry
If you experience oil-based polyurethane not drying well, it’s not likely that it’s bad polyurethane. It’s more likely that the wood you’re finishing contains a natural oil or you have applied an oil to the wood and the oil hasn’t dried. In both cases we’re talking...
TIP: Oil and Spontaneous Combustion
Drying oils, especially linseed oil, are the only finishing materials that spontaneously combust. Solvents don’t spontaneously combust, paint strippers (including paint or finish residue) don’t spontaneously combust, and no type of varnish spontaneously combusts. It’s...