Official Luthiers Forum!

Solely owned and operated by Lance Kragenbrink
It is currently Sun Nov 17, 2019 12:04 pm


All times are UTC - 5 hours





Post new topic Reply to topic  [ 11 posts ] 
Author Message
 Post subject: Bevel / ribrest tutorial
PostPosted: Tue Feb 19, 2008 7:22 pm 
Offline
Contributing Member
Contributing Member
User avatar

Joined: Mon Jan 08, 2007 3:47 pm
Posts: 1213
Location: Raleigh, NC
First name: Ringo
I just completed an armrest bevel and rib rest and thought I would share my methods. Surely there are other ways to do this; this is what worked for me. Hopefully someone out there will find it useful. Also please note that I am not the best writer so please ask if anything is unclear.

I have been reluctant to do a bevel because I couldn't quite wrap my head around how to route the purfling channels on the sides without doing a bunch of hand work. Using .030" wide purfling this was not a task I looked forward to. Then one day it clicked that I could make a template that I could clamp to the sides to act as a guide for a router. I did a dry run on a mock-up body and decided it was good enough to attempt on a real guitar.

First off I made the side template, which is made of two pieces of mahogany bent in the side bender and then laminated together on a mold in a vacuum bag. The template actually sits atop the actual sides on the mold. I laminate my sides using vacuum as well; this makes everything nice and stiff and everything fits together quite well which is absolutely key. Here is the side template being glued up:

Image

Next up I added an extra strip of lining to the sides where the bevel and ribrest would be. I just bent a couple extras when I bent the linings in the first place.

Image
Image

Once the top/back were attached, I dug right in and rough cut the bevel with chisels and a rasp, going a little deeper than the final bevel to make room for a veneer overlay which will match the bindings.

Image

Once roughed out, I rubbed a piece of paper on the bevel to get a flat representation of the 3-D shape of the overlay (it helps to have dirty hands for this job):

Image

Next I transferred the shape to my veneer and cut it with scissors. I put tape over the cut line for support to keep the veneer from splitting down the grain. Ask me how I know to do that... :oops:

Image

Next I glued the overlay, taped it on, and cleaned it up:

Image
Image

Next I routed the binding and purfling channel for the rest of the guitar as if there was no bevel there. Sorry I didn't take a picture of that.

Next comes the heart of the system. I clamp on the templates as best as I can and route the purfling channels. I used a dremel with a 1/32" spiral bit, using the shank to register against the template. You have to keep the tool moving at a reasonable speed or you will burn the template. On the dry run I used a laminate trimmer with a guide which should also work if you're concerned about using the bit shank as a bearing. I was really wanting a Cochran plunge base for this operation!

Image
Image
Image

For the middle of the ribrest, I cut as much as I could with the stewmac base:

Image

and made a custom base to cut the convex portion:

Image

After routing the channels the guitar should look like this:

Image
Image

The purfling is glued up just like normal; there is no interruption at the start/end of the bevel:

Image

Once the bindings are glued in everything is cleaned up and it's finished:

Image

Here's the finished guitar:

Image
Image

-Ringo


Top
 Profile  
 
PostPosted: Tue Feb 19, 2008 8:04 pm 
Offline
Contributing Member
Contributing Member
User avatar

Joined: Sat Jul 28, 2007 1:03 pm
Posts: 724
Location: NE Oklahoma, United States
First name: Steve
Last Name: Walden
City: Bartlesville
State: Oklahoma
Zip/Postal Code: 74006
Country: USA
Focus: Build
Status: Amateur
I believe Lex Luthier is a genius! Too bad Superman! Ha! :D

Thank you for the great tutorial! [clap] [clap] [clap]

_________________
Steve Walden
Aspiring Builder,
Bartlesville, OK


Top
 Profile  
 
PostPosted: Tue Feb 19, 2008 8:41 pm 
Offline
Contributing Member
Contributing Member
User avatar

Joined: Thu May 12, 2005 5:46 am
Posts: 2611
Location: United States
Nice job Ringo, I appreciate your sharing that and it's definitely food for thought for me.
Thanks!

_________________
Jim Watts
http://jameswattsguitars.com


Top
 Profile  
 
PostPosted: Tue Feb 19, 2008 9:04 pm 
Offline
Cocobolo
Cocobolo
User avatar

Joined: Sun Apr 29, 2007 9:48 am
Posts: 108
Location: United States
Thanks for the tutorial, I may have to try that someday.


Top
 Profile  
 
PostPosted: Tue Feb 19, 2008 11:05 pm 
Offline
Contributing Member
Contributing Member
User avatar

Joined: Mon Mar 19, 2007 7:05 am
Posts: 9174
Location: United States
First name: Waddy
Last Name: Thomson
City: Charlotte
State: NC
Focus: Build
Status: Semi-pro
Cool job. That looks really nice. Front and back. [clap] [clap] [clap]

_________________
Waddy

Waddy Thomson Guitars

Photobucket Build Album Library

Sound Clips of most of my guitars


Top
 Profile  
 
PostPosted: Wed Feb 20, 2008 6:50 am 
Offline
Koa
Koa

Joined: Sun Jan 09, 2005 1:50 am
Posts: 952
Location: United States
Thanks for that great tutorial Ringo. It is going directly into the archive.

John


Top
 Profile  
 
PostPosted: Wed Feb 20, 2008 7:22 am 
Offline
Contributing Member
Contributing Member
User avatar

Joined: Fri Aug 26, 2005 5:49 pm
Posts: 2907
Location: Norway
Absolutely LOVELY! Your description of the process is clear, thanks for the effort.

_________________
Rian Gitar og Mandolin


Top
 Profile  
 
PostPosted: Wed Feb 20, 2008 9:26 am 
Offline
Brazilian Rosewood
Brazilian Rosewood
User avatar

Joined: Wed Jun 22, 2005 10:11 am
Posts: 2761
Location: Tampa Bay
First name: Dave
Last Name: Anderson
City: Clearwater
State: Florida
Zip/Postal Code: 33755
Country: United States
Yes, Thanks much for your efforts Ringo!
It's Very clear and precise! [:Y:]
BTW- Beautiful guitar !!

_________________
Anderson Guitars
Clearwater,Fl. 33755


Top
 Profile  
 
PostPosted: Wed Feb 20, 2008 11:01 am 
Offline
Old Growth Brazilian Rosewood
Old Growth Brazilian Rosewood
User avatar

Joined: Fri Nov 02, 2007 9:49 am
Posts: 10374
Location: Ann Arbor, Michigan
First name: Hesh
Last Name: Breakstone
City: Tecumseh and Ann Arbor
State: Michigan
Country: United States
Status: Professional
Very well done Ringo - thanks for sharing with us! [clap] [clap] [clap] [clap]

_________________
Ann Arbor Guitars
World-Class Repair and Restoration
http://www.annarborguitars.com


Top
 Profile  
 
PostPosted: Wed Feb 20, 2008 12:10 pm 
Offline
Koa
Koa

Joined: Sun Jan 09, 2005 1:50 am
Posts: 952
Location: United States
BTW, beautiful linings inside the guitar.

JOhn


Top
 Profile  
 
PostPosted: Mon Apr 13, 2009 3:27 am 
Offline
Cocobolo
Cocobolo
User avatar

Joined: Mon Apr 06, 2009 8:17 pm
Posts: 142
First name: Daniel
Last Name: Green
City: Milford
State: Ohio
Zip/Postal Code: 45150
Country: U.S of A
Focus: Build
Status: Amateur
Thank you very much for sharing, I look forward to learning here at OLF


Top
 Profile  
 
Display posts from previous:  Sort by  
Post new topic Reply to topic  [ 11 posts ] 

All times are UTC - 5 hours


Who is online

Users browsing this forum: No registered users and 2 guests


You cannot post new topics in this forum
You cannot reply to topics in this forum
You cannot edit your posts in this forum
You cannot delete your posts in this forum
You cannot post attachments in this forum

Jump to:  
Powered by phpBB® Forum Software © phpBB Group
phpBB customization services by 2by2host.com