PROS: Minimizes mottled figure Seals end grain so its color matches the face grain Fast drying (except oil-based poly). Easy to rub out (except oil-based poly). Polyurethane is most durable
CONS: Must sand between finish coats. Possible drips, runs and sags. Overspray. Requires organic-vapor respirator. Dust may stick to slow-drying polyurethane. Won't disguise color mismatches. Sapwood remains light-colored.
An aerosol tip that sprays in a wide fan pattern is less likely to leave sags and runs. Just look at the nozzle. If it's round, it sprays a cone pattern; if it's rectangular, it sprays a fan. You can adjust fan-type nozzles to spray horizontally or vertically. Cans with fan-spray nozzles cost about a dollar more, but they're worth every penny.
It's easy to get in corners with aerosols because there's no brushing or wiping. Avoid drips and sags by spraying light coats.
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THIS book is one of the series of Handbooks on industrial subjects being published by the Popular Mechanics Company. Like Popular Mechanics Magazine, and like the other books in this series, it is written so you can understand it. The purpose of Popular Mechanics Handbooks is to supply a growing demand for high-class, up-to-date and accurate text-books, suitable for home study as well as for class use, on all mechanical subjects. The textand illustrations, in each instance, have been prepared expressly for this series by well known experts, and revised by the editor of Popular Mechanics.