Gray Maple

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Forum topic by Woodbum posted 12-15-2014 09:21 PM 668 views 0 times favorited 5 replies Add to Favorites Watch
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716 posts in 2487 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


672 posts in 1405 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, "Choking to death on bacon is like getting murdered by your lover." - JG

View Woodbum's profile


716 posts in 2487 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 704 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


323 posts in 1759 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 I’ve also heard that premixed shellac has a shelf life, could your can be out of date?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


993 posts in 1228 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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