Mold, disease, what is this? - Woodworking Talk - Woodworkers Forum
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post #1 of 4 Old 10-12-2019, 01:50 AM Thread Starter
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Mold, disease, what is this?

I've been working on an end grain countertop for a friend of mine, and after the last glue up, I've noticed these black spots in the end grain. At first, I thought it was something that could be sanded out, but I was mistaken. It looks like it's only affecting the maple, and it's seen on both sides. Has anyone ever seen something like this before?

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post #2 of 4 Old 10-12-2019, 07:53 AM
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Dis these sport show up immediately after board assembly? Or later?

What was the source of the maple? Are sure that it was dried? Did you put any type of finish on the top before the spots showed up?

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post #3 of 4 Old 10-12-2019, 11:49 AM
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That just looks like little pips in the wood, small occlusions that occur naturally in many woods. I've seen it in Maple many times. Call it character and move on - no harm, no foul.



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post #4 of 4 Old 10-12-2019, 12:50 PM Thread Starter
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I first noticed the spots after cutting the wood into strips across then flipping the pieces over exposing the end grain. I donít recall seeing any spots when working with the edge grain. After the second glueup, the state itís currently in, the spots became much more visible. Iím guessing because Iím now trying to flatten the top and bottom, and Iím constantly looking at it. Initially, I thought maybe they were burn marks from ripping the wood but then noticed that itís almost like a pattern. Maybe one piece of the rough cut maple lumber I used was like this. If this wasnít an end grain board, Iím thinking the spots would only be in one particular piece of maple. Nothing has been put on this wood except for the glue, Titebond III

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