Gray Maple

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Forum topic by Woodbum posted 12-15-2014 09:21 PM 957 views 0 times favorited 5 replies Add to Favorites Watch
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830 posts in 3239 days

12-15-2014 09:21 PM

Has anyone ever had spray shellac turn maple gray? I sealed a maple box parts with Zinsser spray shellac prior to glue up, and when it dried, the maple had a gray, muddy tint to it. Where I had taped off the gluing portion of the tenon joints, the maple was still bright and light colored. Any clues from anyone out there? Thanks

-- "Now I'm just another old guy wearing funny clothes"

5 replies so far

View UpstateNYdude's profile


917 posts in 2156 days

#1 posted 12-15-2014 09:31 PM

My only guess is possibly more tannin than is normal in maple and something in the shellac you had caused it to come out, beyond that I couldn’t venture another guess.

-- Nick, “I am always doing what I cannot do yet, in order to learn how to do it.” – Vincent Van Gogh

View Woodbum's profile


830 posts in 3239 days

#2 posted 12-16-2014 12:15 PM

Thanks. I’m pretty clueless on this too.

-- "Now I'm just another old guy wearing funny clothes"

View Sactomike's profile


19 posts in 1456 days

#3 posted 12-16-2014 01:46 PM

Temperature and ambient moisture can do some very strange things to clear finishes. The gray makes me think of moisture problems.

View Lumberpunk's profile


334 posts in 2510 days

#4 posted 12-16-2014 02:29 PM

It kinda sounds like blushing, which I have encountered with Laquer before and is caused by moisture in the wood. I’ve also heard that premixed shellac has a shelf life, could your can be out of date?

Get some methyl hydrate or denatured alcohol and wipe it all off, resand, refinish.

-- If someone tells you you have enough tools and don't need any more, stop talking to them, you don't need that kind of negativity in your life.

View Andre's profile (online now)


2131 posts in 1979 days

#5 posted 12-16-2014 03:59 PM

Too wet, check the moisture in the wood, might even be too much humidity in the air?

-- Lifting one end of the plank.

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