#3rd Custom GR-1SF ‘Annylonation’.

[DarkMark]

I feel like injection with something will be the only long term solution. At the risk of making a mess of it I think I should give it a go.

[Simon Barden]

[JimC]

Well, good luck. I would be inclined to try boat building epoxy rather than cyanoacrylate, simply because its much better at gap filling. I'm trying to think, though, of a good way of exploring what might be going on and where you would need to fill, and not coming up with any ideas I like. Drilling half a dozen 4mm holes round the affected area would certainly enable you to explore what's going on, but feels like a cure that is far worse than the disease. Does careful tapping with a pencil tell you anything useful in terms of the sound?

[Simon Barden]

But surely you want to re-attach the layers in a close-fitting manner, not just fill in the gaps between them leaving things proud?

I must admit to not knowing what's actually achievable here, but I know what I'd like to achieve.

[JimC]

But surely you want to re-attach the layers in a close-fitting manner, not just fill in the gaps between them leaving things proud?

That would be good, but how to do it? I can't think of a way to clamp it all together... And not knowing exactly what's gone wrong doesn't help. TBH that's why if it were mine my inclination would be to monitor it, and only intervene if really forced.

Can you beg or borrow some kind of industrial endoscope to get a sight of what's visible on the inside? I would like to know if anything is visible there. Might give some clues.

I should shut up at this point, because the level of expertise and experience required is almost certainly way beyond my capabilities. Nothing worse than suggestions from people who can talk the talk, but not walk the walk.

[DarkMark]

Progress shot. Sliced along the splits and dug a scalpel around the soft patch. Used a needle and syringe to inject super glue into the wood. Didn’t create as much visible damage as I expected so far. As you can see the position is right where my right arm would be resting and I didn’t want my arm to catch and splinter the area and make me all kinds of unhappy.

[FrankenWashie]

Progress shot. Sliced along the splits and dug a scalpel around the soft patch. Used a needle and syringe to inject super glue into the wood. Didn’t create as much visible damage as I expected so far. As you can see the position is right where my right arm would be resting and I didn’t want my arm to catch and splinter the area and make me all kinds of unhappy.

Exthellent work Thir! Though i think it could uth a few boltth and thitches...

[DarkMark]

Sanded back, a little mahogany in with some poly. Oops, don’t go over the purfling, and I think I will get away with it once I’ve built the layers back up.

[Simon Barden]

You'll get the nice finish back.

[JimC]

Good work.