Need some advice

Wood choice logic, brace shapes, braces patterns -- what and why for the "heart of the guitar"
Dave Bagwill
Posts: 5944
Joined: Tue Dec 13, 2011 7:44 pm

Re: Need some advice

Post by Dave Bagwill » Thu Apr 13, 2017 11:25 am

Thanks Dan, nice work.
I've been making 00-12's for 6 years now, off and on - I've never had as stiff a piece of Sitka as this, though.
I usually test all my tops for stiffness using this contraption, which I copied from Brian Burns.
viewtopic.php?f=7&t=1885&p=17038&hilit= ... rns#p17038

John - that's my method as well. I've done the usual things that have worked for me over the years, but it is still kicking my butt. Nothing I have done has affected the flexibility or tap tone.

I'm looking at that bridge plate now and may reduce it's footprint a bit.
-Under permanent construction

Dave Bagwill
Posts: 5944
Joined: Tue Dec 13, 2011 7:44 pm

Re: Need some advice

Post by Dave Bagwill » Thu Apr 13, 2017 11:33 am

Ken - nope, it's a righty. A lot of 00-12's ago, I actually put the tone bars, by mistake, in the 'wrong' direction. It was a particularly good sounding guitar.
So i did it again on the next 00 - very good sounding - and never looked back. Theory be damned! :-) - I like it this way on this particular body style.
-Under permanent construction

Dave Bagwill
Posts: 5944
Joined: Tue Dec 13, 2011 7:44 pm

Re: Need some advice

Post by Dave Bagwill » Thu Apr 13, 2017 9:14 pm

The root problem was - the bridge plate. After Ken mentioned it, it was obvious. Sometimes when I'm working with a student things will escape me that normally would not.

So I removed 3/4" from the bridge plate - a Royal PITA - and there was a huge difference in sound. So I went about my normal voicing procedure again, and made some little changes and now the board rings nicely.

My concern was the soundboard thickness, really - I"ve done enough guitars to know where to shave and thin and all of that - but it turns out it was a rookie mistake (after 8 yrs of building) that was the culprit. Dang me!!

Thanks
Couple pix - not cleaned up yet - I'll let my student do that....
Attachments
DSC02052.JPG
DSC02052.JPG (199.16 KiB) Viewed 792 times
DSC02051.JPG
DSC02051.JPG (244.02 KiB) Viewed 792 times
-Under permanent construction

John Parchem
Posts: 2675
Joined: Fri Dec 23, 2011 8:33 pm
Location: Seattle
Contact:

Re: Need some advice

Post by John Parchem » Fri Apr 14, 2017 3:01 pm

Glad you found it.

Dave Bagwill
Posts: 5944
Joined: Tue Dec 13, 2011 7:44 pm

Re: Need some advice

Post by Dave Bagwill » Fri Apr 14, 2017 7:57 pm

A relief. I'll still do the perimeter thinning a la Teeter.
-Under permanent construction

Post Reply