Oops, mistake!

[Herman]

This time I thought it was a good idea to try out an extended neckblock. With a massive part from block to upper face brace.
All went well up to the 28" sanding of the rims and blocks. I forgot that the part where the fingerboard is attached to the top should be flat. The neckblock and extension kept the concave form of the sanding. I glue the top to it and guess what? The area stay curved like my bold head. Ugggely! Look and shiver:



So what to do?
-Sanding it flat? The top would be 1mm/0.04" thick left. Hmm, not much for a stressed area.
-Taking the top off? Grrr, don't like that either. Lots of work.
-Chisel the extension off? I don't have the back on yet. So this one is is the most appealing option to me now.

Other visions?
Herman

[Dave Bagwill]

I'll let those with more experience chime in on this. I think I would bite the bullet and remove the top.

[John Parchem]

I would try to chisel and plane the extension off and see what it is like after that. You can always remove the top later if it does not work out.

[ken cierp]

That sure does illustrate one of the pit falls of using that contour dish method which I explain in this article:

http://www.kennethmichaelguitars.com/neckangle.html

I believe if you are comfortable with your neck set process I'd give John's idea a try. The fit can be tweaked pretty easy using a fret-board simulator like the ones supplied in the KMG kits. It will be a little more of a challenge if you are using the real FB and even more difficult if the FB is already attached to the neck.

[Herman]

Don't waste precious time. I did go for the chiseling-off option. Took me 10 minutes. The extension came off quite well. one little chipping. I'll cover the area with a little patch. Sideeffect: the guitar will be a little lighter.
This is how it looked immediate after the surgery. Almost flat. Probably it will get even better after a little settling.
Thanks boys for the support

[Kevin in California]

Much better Herman, good thing you had access to that extension. Another good reason to glue the top on first right!

Kevin

[TonyinNYC]

Nice save Herman. Beats taking the top off!