Info

or so with a dry cloth until the bleeding stops. 1 usually apply the first coat of finish fairly carl) in the day so there is plenty of time to get all the bleeding wiped off before quitting time.

Once scabs have hardened, thev are difficult to s remove. Manufacturers often suggest wiping with mineral spirits, lacquer thinner, or refinisher (which is lacquer thinner). But these solvents won't work because they can't dissolve a cured oil or varnish finish. If vou want to w remove the finish, it will he more efficient to use a paint-and-varnish rcnun er.

Before stripping the finish, though, try abrading the scabs with steel wool. If you're able to remove enough of

caused by the finish coming hark out of tlir |»ore* and forming little puddle» around tile pore o|»eii-illgtf. Bleeding 11111*1 lw uiped oil' lieiore it cure* or *cab* »ill form that »ill have to lie rnhhed oil" itilli -Irel until or

the scabs, apply another coat of finish to replace the finish you've removed. I've had good luck combining the two steps—rubbing with steel wool while the surface is wet with more finish.

Of the four types of "oil finish (see main article), oil-varnish blends thinned with mineral spirits are most likely to bleed. Straight oil seldom bleeds, while wiping varnish and polymerized oil don't bleed easih because they begin to cure so quickly.—B.F.

oil, pure tung oil, polymerized tung oil." etc. Many wiping varnishes and oil-varnish blends, however, arc sold with no indication of their type, often sporting terms like oil finish or tung-oil finish on the label.

You need to know how to tell the difference between a wiping varnish and an oil-varnish blend because they

perform very differently. There are three indicators to look for: how fast the finish cures, whether the finish cures hard, and whether the finish wrinkles severely when it cures thick.

An oil-varnish blend cures more slowly than wiping varnish does. Depending on the humidity, it can take up to an hour to become tacky, while wiping varnish usually becomes tacky in less than 20 minutes. Oil-varnish blends also cure soft and wrinkle when applied thick on a non-porous surface such as glass. (Sec-photo. preceding page.)

You can test whether vou have a

Was this article helpful?

0 0

Post a comment