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Thanks Colin, was beginning to think my posts are invisible.

Joe

Joe, I do think there is some validity to what you are saying. Two other factors are humidity (or lack thereof) and vibration. I think tops expand and contract differently in the non braced areas, and just the shaking from playing in pops 'em out. Waddy's post seems to also confirm my suspicion about more parallel braces/bars telegraphing more. At any rate, last weekend I saw a pretty fancy Bourgeois that had telegraphed the X bracing.

I really hadn't paid a whole lot of attention to this on other guitars, though I certainly have seen it. I am now much more curious and will pay much more attention going forward.

Regarding my own, I only sand my tops by hand once braced. But depending on the season and what I have going on, weeks could pass before I final sand the top prior to finishing. If the humidity has changed, even hand sanding may cause the same effect as noted by Joe.

Ken

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http://www.casperguitar.com

My teacher told me that when glueing fan braces, you could get telegraphing from cleaning glue squeeze out with water (glueing with HHG).

not sure if that's something others here have noticed, but that's what I've been told.

cheers

I would think a telegraph much better than a crack at least.

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"Preoccupation with an effect gives it power and enhances the error"
from "Your Owner's Manual" by Burt Hotchkiss.

Have a look at this video around 20 second mark: http://www.youtube.com/watch?v=jU4Er7N4 ... re=related.