Have you tried just thinner (mineral spirits) or naphtha? I have a feeling
they will do the same. Has the wood been exposed to direct sunlight? If not,
is it humid there? I'm thinking trying a bleach wash then rinse, dry and try
again.

I assume the prior samples were from the same board, of course.

I'm in similar weather (southern Utah). I don't see the abrupt temp change
doing anything to the finish. As for 100 deg, you can expect problems with any
finish that normally dries quickly. I do most finishing very early in the day,
where it's in the 70's.

GerryG

On Sun, 8 Aug 2004 18:46:24 -0700, "Brian" wrote:


So, I've been dealing with Walnut recently and how to finish it.... I've
recently moved to where the weather has been very warm; high 90s to 100
degrees F, and probably warmer in the garage. I store all my varnishes,
oils, etc indoors where the temp is a nice 78. Now on to the problem....

I've been having a problem with ANY finish I apply to the Walnut immediately
turns it black. You name it... Waterlox, Arm-R-Seal, Seal-A-Cell, Linseed
Oil, Danish Oil, Tung Oil, Teak Oil, etc. Now, I am applying these finishes
in the warm garage. I have no problem with gumming up or anything of that
sort, just the blackening of the wood. I'm wondering if 100 degress is
simply too HOT to do finishing work? Or is the temperature CHANGE an issue
(i.e. taking the finish from a cool storage area and applying it in a warm
finishing area without acclimation)?

Now I know that all these products are not bad or contaminated. There's
just no way. Some are only a couple weeks old. I've filtered a few just to
make sure nothing was suspended, to no avail. And, just a few weeks back I
got great results with them on test pieces.. Not the BLACK results I'm
suddently seeing.

Does anybody have an answer here? Any input would be greatly appreciated.

Brian.