Check out this hot piece of ash

Disaster has struck! I left this little guy unattended in my house for one week and now its split front to back.

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Anyone know why my joint is splitting?

Not enough clamps (I used two)? Humidity in my house? Didn't clamp long enough (24 hours)? Not a straight enough joint? Not enough glue? Didn't sand enough?

Time to do some research
 
I don't think I could have done any more glue. I'll try clamping for longer though

If temperatures in your work area are normalish, then usually overnight is fine. My dad was always picky about leaving things for a full 24 hours though when he built furniture . . . and none of that stuff ever came unglued. Way stronger at the glue joint than the rest of the wood.
 
What a pain in the ash. If it's just the glue joint and not the ash splitting, then I think the answer is easier to figure out.

Is it humid where you are? Here in MN, our humidity wave doesn't really kick in until about the end of May. Then it is thick like Florida for a few months here. Nearly every MN home has a moldy basement from our swampnuts humidity every summer.

When gluing in high humidity, I would just allow more time for the glue to dry. As Stv said, waiting a full 24 hours, at least, never hurt any project. If you already waited 24 hours and the split still happened, I would personally start thinking I got a bunk glue bottle. The Ramones would not be happy.

I don't think it's a clamping issue personally. Once that glue dries, that split would never happen IMO. Glue joints are strong AF when it comes to wood. As long as the glue bonds with the wood, it's set in stone once dried. Glue never has a problem bonding with ash, it's not oily AF like bocote.
 
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