#1
Hi everyone

I have a solid top acoustic that i'm beginning to worry about
It had a very small hairline crack near the sound hole, and I've noticed it's starting to spread. I've sealed the crack with clearcoat acrylic, but I want to fix the issue and not just put a bandaid over the symptom.

I'm assuming it's caused by humidity. I generally keep the guitar in its case, but it's not a tric case. I have other solid top acoustics that are exposed to the same environment as this one, and they have had no issues.

I'm going to buy one of those automatic humidity control systems tomorrow...but is there another way i can quickly hydrate the guitar?
#3
Check the link in my signature for information about humidity.

It really depends on which direction the crack is going. If it's along with the grain, it shouldn't be a structural problem. If it spans across the grain, then you need to get it fixed.

You also need to get a hygrometer to check how much relative humidity your guitar is getting. Only hard cases will work with humidifiers.
Equipment:
- Art & Lutherie Cedar CW (SOLD! )
- Martin D-16RGT w/ LR Baggs M1 Active Soundhole Pickup
- Seagull 25th Anniversary Flame Maple w/ LR Baggs Micro EQ

Have an acoustic guitar? Don't let your guitar dry out! Click here.
#4
I did read that before i posted this...I wasn't sure if that only worked as preventative maintenance or if it will resolve the problem

The crack goes with the grain, and is now about 3/4 of an inch long
#5
Preventative only. But if humidity was the problem, it should stop it from getting worse.
Equipment:
- Art & Lutherie Cedar CW (SOLD! )
- Martin D-16RGT w/ LR Baggs M1 Active Soundhole Pickup
- Seagull 25th Anniversary Flame Maple w/ LR Baggs Micro EQ

Have an acoustic guitar? Don't let your guitar dry out! Click here.
#6
Quote by mike_oxbig
I did read that before i posted this...I wasn't sure if that only worked as preventative maintenance or if it will resolve the problem

The crack goes with the grain, and is now about 3/4 of an inch long
No, humidity won't fix a crack. However, if wood is very dry, humidification could possibly mask the issue.

I've found the best way to heal small cracks, and/or prevent them from spreading, is by wicking thin CyA adhesive into said crack. It may take a couple of applications to bridge even a small gap.

If you have access to hypodermic needles, one can be loaded with "Titebond" or similar quality wood glue, and the crack loaded up that way.

Generally though, wood glues like to be clamped just a little, but CyA doesn't require it.
Last edited by Captaincranky at Dec 21, 2011,
#7
i didn't mean fix, per say... i just meant prevent it from getting worse

If it does get worse, however, i will definitely do that. I've already put a thin coat of acrylic clearcoat overtop of the crack to seal it. thanks for the advice.