Woodworker's Journal 2009-33-5, страница 68

Woodworker

Green Application

Finishing Hotline

I ffcn When it comes to being environmentally responsible, how you apply a finish can be equally as or more important than the product that you use.

trapped on the filters. Even those systems that boast higher transfer efficiency, such as HVLP turbine rigs, only reach about 65% transfer efficiency. That's still a lot of waste.

Compare that with a wipe-on gel polyurethane. If you're like me, you apply it with a piece of nylon abrasive pad. One pad will do an entire roomful of furniture without wearing out, and when you are all done, very little

remains on the pad to be dried out and thrown away. The waste comes only in how much you wipe off, and with attention, you can keep that to a minimum as well. Since applicators and wiping rags are allowed to dry out, then get thrown away, there is no solvent used for cleanup.

Using a brush to apply finish approaches near 100% transfer efficiency. The only amount of finish that does not make it onto the wood is the tiny bit you must clean out of the brush bristles when you are all clone. As for the cleaning solvent, that can be kept to a minimum through recycling.

Recycling Solvents

That brings us to the other way we can be greener no matter what finish and solvent we use. Solvents may not be forever, like diamonds, but they are reusable again and again. The

mineral spirits you use to clean your brush or the lacquer thinner you use to clean spray guns can be poured into a lidded container and shelved. Over time, the heavier foreign matter will settle to the bottom. When that happens, decant the clearer liquid atop and reuse it for cleaning the next brush or gun. You will lose some each time to evaporation, but you will be surprised at how much you can reduce your VOC consumption by recycling your cleaning solvents.

By now it should be obvious that by avoiding waste and recycling solvents, you not only reduce your carbon footprint on the earth, but also save money in your wallet. After all, if you are buying fewer cans of finish and solvent, you are coming out ahead in every way._^

Michael Dresdner is a nationally known finishing expert and the author of several books on the subject.

Wipe-On Gel PolyFinish Micro-Tropic Polyurethane

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Mkro-Tropit

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Mkro-Tropit

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Apply with ease and convenience... no mess or spills. No sanding between coats! Ho drips or runsl Low odor!

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Get a hand-rubbed heirloom wood finish without a brush.

Just wipe it on and buff it off for professional results and easy clean up.

(Circle No. 47 on PRODUCT INFORMATION form) (Circle No. 49 on PRODUCT INFORMATION form)

68 October 2009 Woodivorker's Journal