Tip #42
Finishing Touches
Part 2 of 6 - Applying an Oil Finish (continued)
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Tung Oil

Tung Oil is a natural oil that comes from the nut of the Tung tree. It is perhaps the most versatile of all oil finishes. Like all penetrating finishes, it soaks into the wood readily, but successive coats will build up to a varnish-like sheen and depth. The resulting finish is extremely durable and will resist both water and alcohol. Its ability to preserve wood is legendary. In fact, it's said that Tung Oil was used to seal The Great Wall of China against decay.

Apply Tung Oil liberally and allow it to soak into the wood's surface for a few minutes, then wipe off the excess with an oil-dampened rag. Rub the project lightly with 4/0 steel wool to ensure a smooth finish. Allow to dry for one hour between coats, longer if it's humid. Two coats will adequately protect a project, but three will be longer-lasting.

Tung Oil may also be mixed with varnish to achieve a deeper sheen. Your first coat should by four parts of Tung Oil to one part of varnish. The second and third coats should be mixed half-and-half. Allow 2-4 hours of drying time between coats of these blends.

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