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Wood discoloration

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Forum topic by Lynchee posted 12-22-2015 06:02 PM 485 views 0 times favorited 12 replies Add to Favorites Watch
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Lynchee

18 posts in 708 days


12-22-2015 06:02 PM

Hi. 1st post (of course it’s a question).
I’ve been making cutting boards for Christmas, and used a piece of maple that was discolored from being outside.
Anyway, I planed it until the wood looked good, but when I started cutting it, the inside (end grain) is gray. The outside looks pretty normal, but the whole inside looks like poop.
I’m not going to use it because it looks bad, but what is it? Is it mildew? I’ll post a pic of that helps.
Thanks in advance!!


12 replies so far

View TheFridge's profile

TheFridge

5765 posts in 950 days


#1 posted 12-22-2015 06:14 PM

Pics help

-- Shooting down the walls of heartache. Bang bang. I am. The warrior.

View Lynchee's profile

Lynchee

18 posts in 708 days


#2 posted 12-22-2015 06:22 PM

View LiveEdge's profile

LiveEdge

486 posts in 1084 days


#3 posted 12-22-2015 06:27 PM

I think you are seeing a potentially normal variation of maple. It can have a gray tone at times in my experience.

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Lynchee

18 posts in 708 days


#4 posted 12-22-2015 08:01 PM



I think you are seeing a potentially normal variation of maple. It can have a gray tone at times in my experience.

- LiveEdge


Did you notice the “good” color around the outside?
If it’s “normal”, then I feel better. Maybe I’ll finish it and keep for myself. It just looks dirty.
Thanks for the response!

View shampeon's profile

shampeon

1713 posts in 1647 days


#5 posted 12-22-2015 08:08 PM

Take an off cut and soak in some mineral oil. Does it still look grey and muddy?

And yeah, some maples can have that grey tone, particularly soft maple. Adding a finish changes it significantly.

-- ian | "You can't stop what's coming. It ain't all waiting on you. That's vanity."

View Tennessee's profile

Tennessee

2410 posts in 1978 days


#6 posted 12-22-2015 09:05 PM

I just sent out some boards that had a piece or two of that maple with the gray streaks in it. Personally, I thought it gave otherwise colorless maple some character.
After the walnut oil finish, it amplified the grain and the color.
Each to their own!

-- Paul, Tennessee, http://www.tsunamiguitars.com

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Lynchee

18 posts in 708 days


#7 posted 12-23-2015 12:17 AM



Take an off cut and soak in some mineral oil. Does it still look grey and muddy?

And yeah, some maples can have that grey tone, particularly soft maple. Adding a finish changes it significantly.

- shampeon

Yeah, it looked darker.

View Ger21's profile

Ger21

1047 posts in 2595 days


#8 posted 12-23-2015 12:25 AM

If it was exposed to water, than water will seep into the endgrain and cause staining. There’s no way to remove it.

-- Gerry, http://www.thecncwoodworker.com/index.html http://www.jointcam.com

View WDHLT15's profile

WDHLT15

1572 posts in 1940 days


#9 posted 12-23-2015 02:02 AM

It is gray stain. It is an enzymatic oxidation reaction with the sugar in the wood caused by high temp and high humidity. Maple is very prone to it, and if the air flow on the drying stacks is not high, you will get the gray stain.

Here is some information on it.

http://www.fpl.fs.fed.us/documnts/fplrp/fpl_rp654.pdf

-- Danny Located in Perry, GA. Forester. Wood-Mizer LT40HD35 Sawmill. Nyle L53 Dehumidification Kiln. hamsleyhardwood.com

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Lynchee

18 posts in 708 days


#10 posted 12-23-2015 03:39 PM



It is gray stain. It is an enzymatic oxidation reaction with the sugar in the wood caused by high temp and high humidity. Maple is very prone to it, and if the air flow on the drying stacks is not high, you will get the gray stain.

Here is some information on it.

http://www.fpl.fs.fed.us/documnts/fplrp/fpl_rp654.pdf

- WDHLT15

Good info, thanks very much.
So, it’s safe to use as a cutting board if I wanted to finish it up?
I was thinking it might be mildew, but guess not.
Thanks again everyone

View Yonak's profile

Yonak

979 posts in 985 days


#11 posted 12-23-2015 03:51 PM

Honestly, Lynchee, I had to look hard to even see what you are talking about. I wouldn’t worry one whit about it. Everyone will see the great work you’ve done and only you will see your perceived imperfection.

View WDHLT15's profile

WDHLT15

1572 posts in 1940 days


#12 posted 12-24-2015 01:45 AM

Safe to use. I agree with Yonak. It is hardly perceptible. In many cases, it adds character to bland maple.

-- Danny Located in Perry, GA. Forester. Wood-Mizer LT40HD35 Sawmill. Nyle L53 Dehumidification Kiln. hamsleyhardwood.com

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