at room temperature. (If the wood is
exposed to hotter temperatures, like
in direct sun or ceiling beam, then 180
F should be used to provide for better
(Note: If the pitch is not set, we will
also see that the heat from sanding will
soften the pitch and then the sandpaper
will quickly clog or load.)
It seems clear that the wood you
bought was not treated with the required high temperatures, and so your
wood is totally unsatisfactory for the
use you have. Perhaps your supplier
can assume responsibility for correcting the problem.
At this point, there are two options:
replacement or heat treating in place.
With the heat option, you will have to
heat the wood to 170F or hotter for a
few days and also maintain 30 percent
RH so the wood does not dry.
You may need professional help to
get a heater this hot safely and avoid
any fire risk. While heating, you will
also need venting so that the evapo-
rated pitch can be carried away from
the heating enclosure. Overall, this is a
very tough job.
Incidentally, I do not believe that
any practical coating system exists for
furniture that will seal the wood and
keep the sap from bleeding out in this