Woodworker's Journal 2009-33-5, страница 17
Calculating finish coverage is an equation that includes a few variables. are only average guidelines, and the amount of coverage you get can vary greatly, depending on three major factors. The first is the substrate. A very porous piece of wood will absorb, and consequently use up, more finish than a coat applied to a denser wood or to an already sealed surface. Thus, when working with porous woods, odds are good QI want to coat some bunk beds, and need to know how much finish to buy. When finish makers state that the coverage is X square feet per gallon, and that one should use at least three coats, does this mean that the gallon will cover X square feet three times or just once? David Minehart San Jose, California A Just once. A claim of 400 square feet of coverage per gallon means there's enough to cover 400 square feet once. For three coats of 400-square-feet coverage, you will need three gallons. However, coverage numbers that on the first coat, you will use more finish and get a lower area coverage rate than on the second coat. The second variable is your application method. Brushing wastes almost no finish: nearly 100 percent of the coating in the can will end up on the wood. However, spraying wastes anywhere from 35 percent to 75 percent of the finish, resulting in far lower coverage rates. 'Hie third variable is you. What you call "one coat" may be much thinner or thicker than what the next guy calls "one coat." Thus, your coverage per gallon may be much more or less than the company estimates on its can. — Michael Dresdner T WINNER! For simply sending in his question on planes, Richard Lumley of Copperopolis, California, wins a Steel City Bench Mortiser (Model 2S200). Each issue we toss new questions into a hat and draw Continues on page 18 with Stumpers ... For more info call TOLL FREE • 80% profit margin with potential earnings* of $50-$ 100 per hour. • Complete turn-key, ready-to-go part time or full time. • Small investment with great returns. 877-73 I -9303 • Marketing & Sales materials to get you selling. • EUREKA's FactoryTrac1 Jig & Template System assures high quality, handcrafted products every time in record time. ^ Incredible value on Western red cedar and stainless steel fasteners. or visit WWW EUREKA's expanding College & University Logo Chair Program continues to open up new markets for our Producers! "For illustrative purposes only. Results not guaranteed or typical. Any actual sales or profit potential depends on a number of factors, most of which are beyond the control of EUREKA. Tired of spending all weekend building birdhouses and making birdseed for profits? Transform your garage or small shop into a furniture factory! lirn your woodworking passion into profits with the proven business plan from... EKA WORKS, INC 7" (Circle No. 27 on PRODUCT INFORMATION form) Woodworker's Journal October 2009 17 |
