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-   -   Curly Mahogany St Clair Build Thread (https://www.acousticguitarforum.com/forums/showthread.php?t=531785)

Kenneth Casper 12-17-2018 04:20 PM

Curly Mahogany St Clair Build Thread
 
Been a few years since I posted a build thread on this AGF. I have three builds on the bench now, and I decided to post a build thread of the curly mahogany St Clair. The St Clair is my take on the OO, styled largely on the Gibson. Hopefully a few of you enjoy following along.

First up is joining the top panels and the back plates. On this smaller guitar, we flipped the top panel joint from the narrow growth lines to the wider. My customer wants a very responsive top, and this should help free it up a bit. The top wood is Italian spruce:
http://www.casperguitar.com/photos/_...l/IMGQ2639.jpg

The back is curly mahogany with pretty tight curl across most of the back:
http://www.casperguitar.com/photos/_...l/IMGQ2643.jpg

Paul, my customer, wants black trim on this guitar, so we did a rosette of ebony. I didn't have any ebony large enough to do a rosette from a single piece, so I cut pieces of ebony with the grain running radially. We are taking the ebony all the way to the sound hole, so I made the ebony pieces and the pocket to provide some strength under the rosette:
http://www.casperguitar.com/photos/_...l/IMGQ2733.jpg

With the top on my CNC table, I cut the pocket for the ebony, inlay the ebony, then cut the pocket for a ring of MOP, which was cut earlier on my CNC:
http://www.casperguitar.com/photos/_...l/IMGQ2736.jpg

Once the shell is in, I cut the pocket for the outer purfling and glue it in:
http://www.casperguitar.com/photos/_...l/IMGQ2739.jpg

Then all that is left is to cut the sound hole and level the rosette:
http://www.casperguitar.com/photos/_...l/IMGQ2743.jpg
http://www.casperguitar.com/photos/_...IMGQ2743-2.jpg

I cut the sides to the final shape prior to bending. Here the side is thicknessed, sanded, profiled, and ready for the bender:
http://www.casperguitar.com/photos/_...l/IMGQ2877.jpg

I spritz the side with water, wrap it in foil, sandwich it between steel slats, then off to the bender:
http://www.casperguitar.com/photos/_...l/IMGQ2878.jpg
http://www.casperguitar.com/photos/_...l/IMGQ2882.jpg
http://www.casperguitar.com/photos/_...l/IMGQ2883.jpg

The inner side is sanded and the neck and tail blocks glued in:
http://www.casperguitar.com/photos/_...l/IMGQ2886.jpg

I have the linings glued in for the back. The mold is flipped over and linings that I have soaked in water are clamped to the sides. Once dry, I'll glue them in:
http://www.casperguitar.com/photos/_...l/IMGQ2888.jpg

Thanks for following along.

Ken

justonwo 12-17-2018 04:28 PM

You really can't have too many build threads with curly mahogany.

rlb9682 12-17-2018 05:27 PM

That is gorgeous mahogany. I"m still wiping the drool off of my keyboard. :guitar:

TomB'sox 12-17-2018 06:09 PM

Fantastic so far, love the rosette.

mountainguitar 12-18-2018 08:40 AM

A Ken Casper build thread!!! You build such beautiful instruments- it will be wonderful to follow this one!

beth

David Wren 12-18-2018 04:12 PM

Hey Ken ... do you think you could get the joints on the pearl in the rosette any tighter ... good grief, they're invisible ... love it!

Tim McKnight 12-18-2018 05:11 PM

Quote:

Originally Posted by David Wren (Post 5922838)
Hey Ken ... do you think you could get the joints on the pearl in the rosette any tighter ... good grief, they're invisible ... love it!

My thoughts exactly. Super clean build Ken!

Kenneth Casper 12-18-2018 08:30 PM

<<You really can't have too many build threads with curly mahogany.

Glad you agree, Juston!

<<That is gorgeous mahogany. I'm still wiping the drool off of my keyboard

It is nice, RLB. The black trim should really set it off.

<<Fantastic so far, love the rosette.

Thanks Tom. There is an infinite variety of rosettes and this is yet another!

<<You build such beautiful instruments- it will be wonderful to follow this one!

Beth! Thanks for chiming in and following along! I believe this is my first build thread since yours. I'm not the best at checking in here. Putting a thread up might get me on here more frequently :)

<<do you think you could get the joints on the pearl in the rosette any tighter ... good grief, they're invisible ... love it!

Not much tighter :) Thanks Dave! Challenge is getting the color and chatoyance matched up. If I can do that well, the joints disappear.

<<My thoughts exactly. Super clean build Ken!

Thanks Tim. I'll see if I can keep it up throughout the build :)

Godfather 12-18-2018 08:42 PM

My goodness! What a beautiful set of mahogany!
Your craftsmanship is second to none sir. I look forward to following along.

Guitars44me 12-18-2018 10:30 PM

What Justinwo said...
 
Quote:

Originally Posted by justonwo (Post 5921908)
You really can't have too many build threads with curly mahogany.

This is going to be a beauty. That Hog is gorgeous

Carry on and have FUN

Paul

Steve Kinnaird 12-18-2018 10:35 PM

Indeed, very nice Ken!

Steve

Kenneth Casper 12-19-2018 09:01 PM

<<My goodness! What a beautiful set of mahogany!
<<Your craftsmanship is second to none sir. I look forward to following along.

Thank you sir! You have snow up there?

<<This is going to be a beauty. That Hog is gorgeous. Carry on and have FUN

Thanks Paul. That I shall do!

<<Indeed, very nice Ken!

Thanks Steve!

Started bracing today. Nothing that you probably haven't seen a hundred times in build threads. About the only thing different here is the layout. We are doing a 13 fret, so I needed to modify the bracing layout a bit. I moved the sound hole a tad lower and the bracing even lower. The 25.4" scale pushes the bridge deep into the lower bout, and I still need the bracing to provide some support beneath the bridge:
http://www.casperguitar.com/photos/_...l/IMGQ2891.jpg

I dry clamp the X braces into position to help keep the bridge backing plate in position, which I glue in first:
http://www.casperguitar.com/photos/_...l/IMGQ2893.jpg

Heating up the hide glue:
http://www.casperguitar.com/photos/_...l/IMGQ2895.jpg

Once the bridge backing plate is glued in, I remove the X braces:
http://www.casperguitar.com/photos/_...l/IMGQ2896.jpg

Then the rest of the bracing goes on:
http://www.casperguitar.com/photos/_...l/IMGQ2898.jpg

Kind of boring, but it will get better :)

Ken

Guitars44me 12-19-2018 09:17 PM

Hey Beth
 
Beth I bet you are following this. Did I play your Casper? I know you raved about it. It's been a while…. The couple you brought were really nice!!

Either way this thing is going to be a killer!

A MUSICAL YULE TO YOU

paul

mountainguitar 12-20-2018 12:54 AM

Quote:

Originally Posted by Guitars44me (Post 5923999)
Beth I bet you are following this. Did I play your Casper? I know you raved about it. It's been a while…. The couple you brought were really nice!!

Either way this thing is going to be a killer!

A MUSICAL YULE TO YOU

paul

You have not played my Casper. It's a gorgeous guitar and it's in an Ameritage case that weighs a ton! So I left it home, as I was having to truck guitars through the conference I was presenting at : )

My Casper is a beautiful guitar. And Ken is such a great person! If you want to see some gorgeous guitar pics, the build thread is here: https://www.acousticguitarforum.com/...d.php?t=410508

Next time I visit, I will bring her along!

beth

Godfather 12-20-2018 07:04 AM

Quote:

Originally Posted by Kenneth Casper (Post 5923987)
<<My goodness! What a beautiful set of mahogany!
<<Your craftsmanship is second to none sir. I look forward to following along.

Thank you sir! You have snow up there?
Ken

We had about 7-8" on the ground...but it's gone. Just a trace left here and there. We need the snow. It is raining right now :( but suppose to change over to snow with a trace to 1' predicted.

Merry Christmas...and please, keep posting this build.


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