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 ARCHIVED TOPIC: How should a National cone fit?


Please note this is an archived topic, so it is locked and unable to be replied to. You may, however, start a new topic and refer to this topic with a link: http://www.resohangout.com/archive/12418

Aaron Smith - Posted - 01/05/2010:  09:46:10


Greetings all... I recently got a cheap resonator that I'm putting some work into to bring to life. The good news is that it sounds and plays great- there are however a few small details that I'm sorting out.
I have a National cone and biscuit that I plan to install. The current cone and the National cone are the same size, but they both fit the recess pretty loosely. When sitting flat on the ledge, it is possible to move the cone about 1/4" towards or away from the headstock, or 1/4" towards the upper or lower bout. Obviously this has some pretty major ramifications for intonation, compensation and string spacing.
My first question is whether this situation is normal or even intentional, so that intonation/compensation may be adjusted by the installer. Or is it just a symptom of my cheap guitar.
My second question is how to ensure the cone remains well-placed once I determine it's correct location. I plan to cut the biscuit slots with the cover plate removed but the tailpiece installed; I can also slide the cone to the correct spot at this time. The problem is, when I remove the tailpiece to install the cover plate, then restring the guitar, how do I keep the cone from moving? I know that it's not customary to glue them into place, but is there some sort of temporary measure I can take to make sure that it stays put?
Thanks in advance.

Dukasyo - Posted - 01/06/2010:  06:26:20


Had the same problem on an Epiphone biscuit. I cut three small blocks of wood (just some little shims really) and located them (glued) strategically around the inside of the ledge to position the cone where i wanted it, which, in my case anyway, was right in the center of the coverplate cutout. Otherwise the string tension pulled the cone & biscuit all the way forward to the point where it just about interfered with the action. That worked fine, no problems with action, intonation, tone or volume. Good luck!
Mike D.

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