Replies

1. 
   efarmer4 | Oct 01, 2003 10:18am | #1

   See "Origins of spalted maple", message 13882.1

   Edward
2. 
   jazzdogg | Oct 02, 2003 08:28pm | #2

   David,

   Might want to try some oxalic acid - not sure if it'll be effective or not, but it couldn't hurt to test a piece. I usually run ito blue stain in oak this when I'm working green wood (chairs) and discard the stained wood before proceeding with the project. Theses kinds of stains can be exacerbated by contact with metals and other elements beause of the high tanin content of oak. If memory serves, the stain seems to be more vigorous in sapwood than heartwood. I seem to recall this problem being insurmountable when attempting to harvest maple in summer -awful staining.

   Good luck,
   Paul

1. 
   Curtis | Oct 03, 2003 11:59am | #3

   David

   if the wood is starting to grow mold,you can wash it down with bleach, it will kill the mold,and shouldnt effect the wood.

   otherwise you will be stuck wiith spalted oak,Which might not be so bad?

   Good luck. C.A.G.

2. 
   jjf | Oct 03, 2003 07:06pm | #4

   There are many types of stain.  When oaks come in contact with iron the tannic acid reacts with the irn and produces a blue-black stain this is not mold .  Graystain or blue stain is not truely a mold and is most evident in sapwood.  It is a stain produced by an organism.  Mold that produces a growth on the surface is also an organism, is  actually the fruiting body, and given enough time will penetrate the surface.  The brown stain associated with maple is a chemical stain where the enzymes are oidizing the sugars.  Both chemical stain and stain produced by organisms are avoided by drying quickly at low temperatures to void the material of water.  Voiding the material of water stops the organism of chemical reactions.  Oxalic acid only removes one type of stain . I think it is the iron stain.