Cornerstone Baritone? Watch the build! - Page 6

tpp · #76 12-17-2009, 08:13 AM

Quote:

Originally Posted by K III

Wouldn't that have a HUGE effect on how they bend when the soundboard vibrates? Seems to me that a carbon fiber laminate would change the characteristics of an Adi brace by factor 100. Maybe a naive view?

I know there are a number of builders who use carbon fiber rods as part of their bracing scheme, including Gregg Gwaltney and Howard Klepper. I wonder how this laminate of spruce and carbon fiber will compare.

Ryan Alexander · #77 12-17-2009, 08:22 AM

That's pretty wild! I don't think I've ever seen any other builders incorporate CF right into the bracing itself - very interesting. Knowing Peter, I'm sure he has done lots of homework on this

SuperB23 · #78 12-17-2009, 10:55 AM

Looks great Peter!!! If this build goes well are you going to add a Baritone Option to your current line up??

Cornerstone Guitars · #79 12-17-2009, 11:30 AM

Thanks Bobby,
the baritone's debut will also be its addition to the current line up.

Cornerstone Guitars · #80 12-17-2009, 11:47 AM

Quote:

Originally Posted by K III

Wouldn't that have a HUGE effect on how they bend when the soundboard vibrates? Seems to me that a carbon fiber laminate would change the characteristics of an Adi brace by factor 100. Maybe a naive view?

You are correct in a way. Carbon fiber will stiffen the braces substantially but that's exactly what I want. The baritone strings will add a huge amount of tension (about 30% more) and I want to to advantage of that. Carbon fiber will allow me to keep the braces strong without having to make them thicker.

There are a few builders that have used carbon fiber reinforced braces in the past and all with good results.

lightmage81 · #81 12-19-2009, 01:50 AM

Wow... that's highly innovative if you ask me. It seems like the carbon fibre will have a really HUGE impact on things!

All the best Peter!

Cornerstone Guitars · #82 01-07-2010, 01:17 AM

Not a lot of progress since setting up the new shop is consuming a lot of my time but some folks here were inquiring about some more progress so here it is....
I decided to go with a one piece neck of curly mahogany. I think it will complement the back and sides nicely.

Neck tenon and heel machined

Headplate glued on

Backstrap veneers glued in place

tpp · #83 01-07-2010, 08:03 AM

It's looking good Peter! Is that backstrap made of makore?

cpabolting · #84 01-07-2010, 08:07 AM

Peter

Do you make dovetail necks or are you straight M/T neck? If you make both, what are your considerations when making the decision to use one over the other?

Cornerstone Guitars · #85 01-07-2010, 09:39 AM

Keith,
I only use straight mortise and tenon. I believe it makes it easier to work on in the future if it ever needs it.

Cornerstone Guitars · #86 01-07-2010, 09:40 AM

Quote:

Originally Posted by tpp

It's looking good Peter! Is that backstrap made of makore?

Tom, the backstrap is Macassar ebony.

cpabolting · #87 01-07-2010, 09:59 AM

Quote:

Originally Posted by worshipguitar

Keith,
I only use straight mortise and tenon. I believe it makes it easier to work on in the future if it ever needs it.

Kevin Ryan is pretty steadfast on his use of the M/T. He says if done properly and is tight as can be, it is just fine to use. He said that in his opinion there was only one nameless luthier that did the dovetail the right way.... that most manufacturers shim the joint which undermines what makes the joint good is that tight fit.

THanks, looking good.

Cornerstone Guitars · #88 01-07-2010, 10:32 AM

Quote:

Originally Posted by cpabolting

Kevin Ryan is pretty steadfast on his use of the M/T. He says if done properly and is tight as can be, it is just fine to use. He said that in his opinion there was only one nameless luthier that did the dovetail the right way.... that most manufacturers shim the joint which undermines what makes the joint good is that tight fit.

THanks, looking good.

I agree with Kevin. We've had that conversation before and I do agree. One of the reasons I like the M/T is because I can machine a tight fit before the neck block gets glued onto the body. That way its tight and square. I'm sure that "nameless" builder makes great guitars...you may even have a few!

cpabolting · #89 01-07-2010, 11:12 AM

Quote:

Originally Posted by worshipguitar

I agree with Kevin. We've had that conversation before and I do agree. One of the reasons I like the M/T is because I can machine a tight fit before the neck block gets glued onto the body. That way its tight and square. I'm sure that "nameless" builder makes great guitars...you may even have a few!

Everyone gets a little testy when I name names

cpabolting · #90 01-07-2010, 11:14 AM

Quote:

Originally Posted by worshipguitar

I agree with Kevin. We've had that conversation before and I do agree. One of the reasons I like the M/T is because I can machine a tight fit before the neck block gets glued onto the body. That way its tight and square. I'm sure that "nameless" builder makes great guitars...you may even have a few!

So in larger scale production applications, are they shimming the M/T when they do the necks and the bodies separate in order to get the neck angle right or is it that exact that it is fine? I just cannot imagine the neck angle doesn't need some seducing on those facilities that are producing necks and bodies separate as opposed to you doing one at a time and of course making sure it is perfect.