Side Repair on Dreadnought build

[robbyfowler6]

I built a guitar for my buddy that lives 6 hours away so consequently Ive had to keep the guitar for about half a year after its finished. Unfortunately, I put the guitar on a wall mount stand, and it fell off the wall mount stand. When it fell, the side had a huge crack up the whole side. I reglued it and im trying to get it looking like it never happened. I sanded down to the bare wood and repainted most of the side where there was a split. My joint is fine, but the problem is that the wood around the crack is darker in color. I thought that it was because of the wood glue staying on the wood and discoloring the finished, so I resanded it down to the wood and clear coated it again. Same thing happened. I attached a picture. Let me know what is the cause of these darker spots and how I can fix it. Also the white spot is just where I sanded it through on accident, but now it doesn't matter cause Im going to have to redo it anyways to fix the dark spot.

[robbyfowler6]

https://ibb.co/kXVFytB

[robbyfowler6]

would greatly appreciate any advice or insight

[phavriluk]

Perhaps this question would get more response over at the 'official luthier's forum'.

[charles Tauber]

What kind of glue did you use?

[RonMay]

That looks like natural grain flow to me. It parallels the darker wood above it.

You might have not noticed it before because you weren't focused on that part of the guitar.

Ron

[robbyfowler6]

98% percent sure that it wasn't there before it cracked. Maybe stress to the area made a different grain pattern and color

[robbyfowler6]

Originally Posted by charles Tauber

What kind of glue did you use?

Regular wood glue

[robbyfowler6]

Originally Posted by RonMay

That looks like natural grain flow to me. It parallels the darker wood above it.

You might have not noticed it before because you weren't focused on that part of the guitar.

Ron

98% percent sure that it wasn't there before it cracked. Maybe stress to the area made a different grain pattern and color

[charles Tauber]

Originally Posted by robbyfowler6

Regular wood glue

As in yellow or white glue?

It looks, as you said, just like smeared glue on the surface of the wood under the finish. It might take more than a superficial sanding to remove the glue. If you are familiar with it, I'd suggest using a cabinet scraper.

If the side is thin and unsupported what might be happening is that it flexes under the pressure of your sanding block - you are, of course, sanding using a sanding block - so that it isn't effectively sanding the area adjacent to the crack.

Originally Posted by robbyfowler6

98% percent sure that it wasn't there before it cracked. Maybe stress to the area made a different grain pattern and color

If the sides are book matched, look at the other side and compare its coloration. Not 100% conclusive, but it'll give you a pretty good idea of what the cracked side looked like prior to the repair.

[mirwa]

Looks like glue to me, if you had not off said you used regular wood glue I would have suspected it had been glued up with superglue as superglue has a tendency to stain and darken some woods

Steve

[Victory Pete]

What kind of finish is it?

[robbyfowler6]

Originally Posted by Victory Pete

What kind of finish is it?

nitro lacquer

[Victory Pete]

Originally Posted by robbyfowler6

nitro lacquer

That is strange, it does look like glue but that would have been a lot of glue leftover to look like that especially when you have already sanded it down and refinished it.

[Dyson Guitars]

Charles nailed it with the unsupported sides flexing while you sand idea I think. It looks like glue to me.