Hi,
I am really struggling with finishing quarter-sawn sycamore for my keepsake boxes. Invariably, I find that there are black smudges (for lack of a better word) that appear on portions of the board. This discoloration runs through the board and so I suspect some type of mineral deposit. The smudges are there before finishing but seem to be more visible after finishing. I've included some photos of the raw wood. I've tried to use A-B bleach to no avail. Has anyone see this before on sycamore? If so, is there a way to remove the black smudges?
Thanks!
JG
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