I get asked a lot about the oil that I use, and over the years I've used many different types. One mix that I've often returned to is a spar varnish, raw tung (or linseed) and mineral spirit mix. The next question that I get asked is usually about the proportions, which is perfectly natural.
First, the spar varnish. This is the tough flexible finish that dries to form the shine and water resistance. But, left alone, it is way to sticky, thick and fast drying. So to slow it down to the point that I can lay on a thin layer, I add the raw oil, which goes on smoothly but if applied alone would take way to long for my patience to build and dry. But mixing these two together gives a mix that is akin to the thickness of honey, so I add mineral spirits to make it flow. If it's the first coat and my goal is to flood the oil on and have it soak in, then a generous amount of mineral spirits is a good idea, but for later coats that I pad on and wipe off the surface quickly, then a thicker mix works fine. Often, I'll burnish the chair before the final coat and use more raw oil in the last mix to get a "softer" look. I don't wax my chairs because I've seen trouble with body heat causing clouding, but maybe I just don't know how to use it or have used the wrong stuff.
And of course, dispose of rags in a safe way to prevent spontaneous combustion!!!
Wednesday, July 13, 2016
Tuesday, July 12, 2016
Here you can see the oil going on over the fumed wood, I don't think the video will play, but the image say it all. I fumed it overnight to get this color with regular household ammonia.