Does anyone have tips for dealing with the fuzz that is sometimes present in the grain of some mahogany? I know it's best to try not to use it, but there you are. Just sand until gone, or fill with epoxy and then sandů?
(Architectural Woodworking Forum)
From contributor P:
I've been stuck working with thousands of BF of the fuzz. Seems to be more common these days due to dwindling supplies of good lumber. Shellac seems to be the best for eliminating the fuzz and allowing me to sand, finish, stain, etc. Be sure to test on scrap first and cut the shellac if needed. I have also used West System epoxy. I would be curious as to what causes the fuzz. Improper drying or reaction wood seems to be my conclusion.
The cure is to first use sharp tools (no carbide) and sharp (= fresh) sandpaper. The sharpness will cut these weak fibers. A second approach is to use something to stiffen them, such as a sanding sealer or glue sizing. As this only stiffens the fiber, which makes it easy to cut, one must be careful not to sand very much, as you can sand through this coating and get down to fresh wood.
I do have an article in my old book "The Wood Doctor's Rx" that I can send if you need more, but I think this above covers it. We do see this fuzz in yellow poplar, red oak, and many other species.