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Would you like to add information to this article? Interested in writing or submitting an article? Have a question about this article? Slippery kiln-dried wood Question
Forum Responses
Gene Wengert, forum technical advisor
From the original questioner: We use the weight method with sample boards and most of the time we double-check it with a surface meter. We air-dry our lumber and endcoat it as well. Quality control at the plant also uses a surface meter. We equalize if the moisture content spread is too much and always condition. Two-thirds (200,000') of our kiln capacity is in new American kilns so we can hold them where we want them. We will check out our MC again. What is your final setting in the kiln? Try one load at 160 F and 115 F (DB and WB) or maybe even 160/117. Are your samples including several pieces that represent the driest lumber in the load? As a general statement, never skip equalization, even if the sample boards are within the range desired (no more than 2% MC apart, assuming you have both the driest and wettest), as the surface is drier and the ends are drier. Drier lumber is much stronger than lumber over 7% MC. As a result, drier lumber machines with more difficulty and requires more energy to feed. Gene Wengert, forum technical advisor
From the original questioner: We are doing shell and core testing. I just heard from the plant it isn't as slippery on rainy days. This sure points to over-dried lumber--check the operator to make sure that he/she is looking for the driest as well as the wettest. Gene Wengert, forum technical advisor Have you reviewed the related Knowledge Base areas below? 
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