Will this crack get worse?

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Forum topic by DanielP posted 07-11-2016 11:33 PM 645 views 0 times favorited 22 replies Add to Favorites Watch
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476 posts in 1316 days

07-11-2016 11:33 PM

After resawing this maple down to about 5/8” thick you can see there is a serious crack. The moisture content registers at 8% so I’m thinking I might get away with filling it with super glue or such and using it. It is for a box with mitered corners.

Any ideas?

-- --- Dan

22 replies so far

View gargey's profile


400 posts in 200 days

#1 posted 07-11-2016 11:38 PM

image not working.

View DirtyMike's profile


386 posts in 326 days

#2 posted 07-11-2016 11:50 PM

Image is working just fine. I have never had good luck gluing cracks like that. good luck

View TheFridge's profile


5683 posts in 910 days

#3 posted 07-12-2016 12:05 AM

I’d get another piece

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

View robscastle's profile


3324 posts in 1628 days

#4 posted 07-12-2016 12:07 AM

Hello Dan
A typical characteristic of a crack is they do ny get smaller, otherwise they would not apper in the first place.
However there are some isolated cases where conditions change and they do.
I suspect in your example they will change as the EMC changes, so.

Your reporting a EMC of 8% ...where are you measuring it please.
Another name for a crack (apart from all the others tee hee ) is checking.
Now checking is a charastic of wood and in particular forming at the ends of timber as they dry, and are usually milled off in the process of consruction.

Apart from all the scientific explanations if your timber is able just saw it off and the problem is gone.
I do not think superglue will fix it in the long term, the stress causing it may appear some where else later.
But there is no harm in trying.

I had a look at your projects and there is no doubt you know what you are doing (nice work)
Let meknow abot the 8% ifyouare still concerned.

Best of luck in your ventures.

-- Regards Robert

View Jerry's profile


1710 posts in 1072 days

#5 posted 07-12-2016 12:09 AM

Dan, you could trickle some thin super glue down into the crack and then clamp it. You’d need to make sure that the glue got onto every surface though, tricky without knowing the extent of the crack internally. Now don’t take this next idea as advice, just as another approach. If it were my board, I would force the board to split all the way apart at the crack, and then super glue it with Titebond 3 and clamp it up for 24 hours. You could then use filler for any end grain problems.

-- There are good ships and there are wood ships, the ships that sail the sea, but the best ships are friendships and may they always be.

View DanielP's profile


476 posts in 1316 days

#6 posted 07-12-2016 12:30 AM

Thanks for the responses guys.

Robert, thanks for the nice comment. I measured the MC by sticking the General MM1E probes into the middle of the end grain of the piece your looking at. However after reading all the comments I tend to agree with the consensus that it is likely to become even a bigger problem no matter what I do. So, it will become a smaller box. :)

Jerry, if it was more critical and farther along I might try something like that. I thought I was getting a good deal on this because it was in the remnant bin…NOT!

-- --- Dan

View kizerpea's profile


774 posts in 1792 days

#7 posted 07-12-2016 11:38 AM

Air dryer or kiln dried?


View DanielP's profile


476 posts in 1316 days

#8 posted 07-12-2016 01:01 PM

Air dryer or kiln dried?

- kizerpea

That I don’t know.

-- --- Dan

View rwe2156's profile


2128 posts in 905 days

#9 posted 07-12-2016 02:38 PM

I like Jerry’s idea.

-- Everything is a prototype thats why its one of a kind!!

View HokieKen's profile


1548 posts in 563 days

#10 posted 07-12-2016 04:52 PM

Good advice above. Just wondering… is there anything special about the board that makes it worth the effort? Maple’s pretty cheap and readily available (here on east cost anyway). Might consider throwing it in the scrap pile and starting with a fresh board.

-- Kenny, SW VA, Go Hokies!!!

View AandCstyle's profile


2541 posts in 1681 days

#11 posted 07-12-2016 11:14 PM

Dan, I have mixed a thin epoxy and sucked it into the check with my shop vac, then clamped the board while the epoxy cured. I don’t have any long term data, but so far, so good. FWIW

-- Art

View DanielP's profile


476 posts in 1316 days

#12 posted 07-13-2016 02:00 PM

rwe, I like his advise also.

Kenny, Probably a good idea, at least cut away the bad part and make a smaller box. I try to use up as much as possible,... maybe save a baby polar bear from drowning.

Art, interesting idea. Will log that for future reference.

-- --- Dan

View Grumpymike's profile


1900 posts in 1740 days

#13 posted 07-14-2016 07:41 PM

Hi Dan I made a keepsake box out of some really pretty Maple with a Bloodwood top … And as all the TV woodworkers say, cut off the end 4 inches of your stock and toss it. Well, Bloodwood is kind of costly, so I cut off about an inch and continued with the project … Fast forward a year and a half … Now the box is showing a hairline crack about an inch and a half long.
AS for your cracked board, I would rip it into smaller widths and use up on another project … I’m sure that the crack will get more pronounced as time goes on.
If it’s a part you just have to keep and cannot replace it, then go with Art’s suggestion and suck it full of epoxy … Then say your prayers every night.

-- Grumpy old guy, and lookin' good Doin' it. ... Surprise Az.

View DanielP's profile


476 posts in 1316 days

#14 posted 07-14-2016 10:14 PM

Mike, I do plan to rip it down to a smaller size, nothing special about having to save it, other than wasted time.

Hopefully you can get that bloodwood crack stabilized. Maple and bloodwood are a great combination.

-- --- Dan

View jbay's profile (online now)


714 posts in 323 days

#15 posted 07-14-2016 11:17 PM

In my opinion it’s not a crack or splitting/checking. It looks more like a fracture in the growth. I’m not sure what it’s called, but I think it was there the whole time.

-- Many times my “MO” involves Judging others, playing God, acting as LJs law enforcement, and never admitting any of my ideas could possibly wrong or anyone else's idea could possibly be correct.--

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