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Characteristics of butt log lumber
Denser, darker wood than the rest of that from the same laod may be from butt logs. 1998.
by Professor Gene Wengert
Q.
I dry red oak in a kiln using an Ebac dryer. It is about a 1000 bd.ft. kiln with enough air flow to maintain 110 degrees. The problem I am having is this: several boards, when they are planed, seem to be darker and harder than the rest (10 %). Is this just in the wood itself or is there a problem?
A.
I suspect that you have some lumber from a butt log that is much denser than normal, but this is just a guess. We do find that butt logs have darker color too. It is not a kiln problem.
Professor Gene Wengert is Extension Specialist in Wood Processing at the Department of Forestry, University of Wisconsin-Madison.
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Have you reviewed the related Knowledge Base areas below?
KnowledgeBase: Lumber & Plywood: Wood Identification
KnowledgeBase: Primary Processing: Kiln Operation
KnowledgeBase: Primary Processing: Lumber Grading
KnowledgeBase: Wood Engineering: Wood Properties
KnowledgeBase: Forestry
KnowledgeBase: Forestry: Timber Harvesting
KnowledgeBase: Knowledge Base
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