Read More Articles by Gene Wengert

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Gene Wengert

Gene Wengert, “The Wood Doctor” has been training people in efficient use of wood for 45 years. He is extension specialist emeritus at the University of Wisconsin-Madison.

FDMC Magazine

Spraying water and staining

Q: Our main red oak supplier sprays water on his logs during the summer. I have heard that some guys don't buy red oak if the logs were under water because you can't keep the sap from staining. Is this true?

FDMC Magazine

Equalizing to achieve target moisture content

Q: We have finally learned that using the correct moisture content (MC) of the lumber prevents end checking and warp in our glued up panels, especially in the wintertime. Our supplier of lumber says that wood is variable and so we cannot get the uniform MC that we need. What can we do?

FDMC Magazine

Bacteria darkens wood

Q: We have been working with red oak for many years, but just this past month we have had several problems with our furniture that are new to us. Specifically, we had one job that we finished with a white-colored paint finish. Several of the individual strips of wood developed a dark, dingy, dirty hue along almost the entire strip about a month after they were put into use. The back sides of the pieces were unfinished and had some mineral in the wood. Do you think that a recent switch to No. 2 Common lumber is involved?

FDMC Magazine

Adhesive help

Q: I have used some contact cement to glue veneers, finished them, and several days later I had some bubbles where the adhesive had let go.

Wood Dr

10 facts about end cracking

Q: Like everyone else, we have some end cracking at the glue joints during the wintertime in our glued-up panels. Our supplier says that the problem is the dry humidity in our plant (about 25 percent RH) and I wonder if it is the high MC in the lumber. What perplexes me is that when we have cracking, we measure the MC and it is always under 7 percent MC and sometimes under 6 percent MC. We are considering increasing the RH in our plant this winter; 45 percent RH has been suggested. Can you comment or direct us in the right direction, as this cracking is expensive?

Wood Explorer

Sycamore

Common U.S. hardwood has character plus. Sycamore is used occasionally in high-end furniture and cabinetry, but seems ignored for the most part - a shame as the wood has more character when quartersawn than any other hardwood, including white oak.