Official Luthiers Forum!

Owned and operated by Lance Kragenbrink
It is currently Thu Nov 28, 2024 6:47 pm


All times are UTC - 5 hours


Forum rules


Be nice, no cussin and enjoy!




Post new topic Reply to topic  [ 23 posts ] 
Author Message
 Post subject: Lets talk Armrest Bevels
PostPosted: Mon Aug 19, 2019 4:09 pm 
Offline
Brazilian Rosewood
Brazilian Rosewood
User avatar

Joined: Wed Feb 20, 2008 9:12 pm
Posts: 6983
First name: Mike
Last Name: O'Melia
City: Huntsville
State: Alabama
Focus: Build
Status: Semi-pro
I feel like a lot of folks have experimented with the armrest bevel. Maybe we can share insights? Lessons learned? Which process do u like and why?

I moved this from the above template discussion.

Mike


Last edited by Mike OMelia on Mon Aug 19, 2019 4:20 pm, edited 3 times in total.

Top
 Profile  
 
PostPosted: Mon Aug 19, 2019 4:10 pm 
Offline
Brazilian Rosewood
Brazilian Rosewood
User avatar

Joined: Wed Feb 20, 2008 9:12 pm
Posts: 6983
First name: Mike
Last Name: O'Melia
City: Huntsville
State: Alabama
Focus: Build
Status: Semi-pro
If you examine both processes (O'Brien, Everett), they share a lot in common. Differences being when side and top is shaped. An advantage of the O'Brien approach is that you have nice slots to insert the binding/purfling. With the Everett approach, I use thumb tacks to hold in place. Not too bad since I use Spanish Cedar for the rest interior. Spanish is also nice because it is light and easily shaped. I also replace some of the top and side material with soft sitka to give me a way to approach the binding/purfling as I sand (shape). I use a flat flap wheel on a drill, then a palm sander for final approach. At this point, they are mostly the same. I just like hand shaping the top and sides instead of using a router. I don't think its practical to expect a template to be useful on future guitar bodies of the same type. Whichever way you go, make sure the binding/purfling in this area is somewhat thicker than normal, u will sand a lot of it away.

Another advantage of the O'brien approach is the ease of attaching the rest to the side. With the Everett approach, I have to save the side cutout (as a clamping support), cover in tape, and make slanted cauls for clamping (due to the slanted interior of the rest). I made 5 small cauls, never had to remake them. Yet to me, the ability to fine tune the shape without a router outweighs the cons. (my opinion)

Edit: adding back the sitka/spruce is for eyeballing only. You do not want to leave any behind. Easy to do if you made your purfling/binding thick enough.


Last edited by Mike OMelia on Mon Aug 19, 2019 4:22 pm, edited 1 time in total.

Top
 Profile  
 
PostPosted: Mon Aug 19, 2019 4:17 pm 
Offline
Brazilian Rosewood
Brazilian Rosewood
User avatar

Joined: Wed Feb 20, 2008 9:12 pm
Posts: 6983
First name: Mike
Last Name: O'Melia
City: Huntsville
State: Alabama
Focus: Build
Status: Semi-pro
One thing I have learned is that it is extremely important to make transition slope on the side VERY gradual. This means the bevel will be bigger than you think! (longer).

Without a doubt, my number one challenge is the purfling lines at (and in) the transition. I am still working on perfecting this one thing. Has anyone else had issues here?


Top
 Profile  
 
PostPosted: Mon Aug 19, 2019 4:33 pm 
Offline
Koa
Koa
User avatar

Joined: Thu Jan 10, 2008 5:08 am
Posts: 1906
Location: Raleigh, NC
First name: Steve
Last Name: Sollod
Focus: Build
Status: Amateur
I've only done one arm bevel. I used Kent Everette's method from his class on Robbie O'Brien's website. One thing that I did differently from his method is split a piece of binding, bent it on the hot pipe and glued it into the void between the binding on top and bottom of the bevel (in this case basswood). That way, I had enough material to shape the bevel and have a smooth transition. If that makes sense...


You do not have the required permissions to view the files attached to this post.

_________________
Steve Sollod (pronounced sorta like "Solid")
www.swiftcreekguitars.com


Top
 Profile  
 
PostPosted: Mon Aug 19, 2019 5:05 pm 
Offline
Contributing Member
Contributing Member

Joined: Sun May 19, 2013 10:22 am
Posts: 727
First name: Brian
Last Name: McDonald
City: Okanagan Centre
State: British Columbia
Zip/Postal Code: V4V2H6
Country: Canada
Focus: Build
Status: Amateur
I was considering one for my next build, but what about the bevel where the spruce itself is curved into the side?
I cannot remember who had done this, but would like to hear some opinions and will be watching this.

Thanks,
Brian

_________________
My memory is so good, sometimes I remember things that never happened.


Top
 Profile  
 
PostPosted: Mon Aug 19, 2019 5:12 pm 
Offline
Brazilian Rosewood
Brazilian Rosewood

Joined: Wed Feb 20, 2008 7:15 pm
Posts: 7380
First name: Ed
Last Name: Bond
City: Vancouver
Country: Canada
Focus: Build
Status: Professional
Doolin bevel...


Top
 Profile  
 
PostPosted: Mon Aug 19, 2019 5:16 pm 
Offline
Brazilian Rosewood
Brazilian Rosewood

Joined: Wed Feb 20, 2008 7:15 pm
Posts: 7380
First name: Ed
Last Name: Bond
City: Vancouver
Country: Canada
Focus: Build
Status: Professional
Image

I used a clothes iron to bend the maple binding in the vertical plane. Might consider doing it his way next time. Though my tendency towards stubbornness leads me to think I actually do it the hard way again next time. Cause, well, it’s my nature...


Sent from my iPhone using Tapatalk


Top
 Profile  
 
PostPosted: Mon Aug 19, 2019 6:07 pm 
Offline
Contributing Member
Contributing Member
User avatar

Joined: Wed Oct 08, 2008 11:36 am
Posts: 7380
Location: Southeast US
City: Lenoir City
State: TN
Zip/Postal Code: 37772
Country: US
Focus: Repair
I'm building one using the Everett method. Had no problem gluing the block to the side, just used four 6" trigger clamps. Working on the top now but so far it's been pretty straight forward.

_________________
Steve Smith
"Music is what feelings sound like"


Top
 Profile  
 
PostPosted: Mon Aug 19, 2019 6:50 pm 
Offline
Brazilian Rosewood
Brazilian Rosewood
User avatar

Joined: Wed Feb 20, 2008 9:12 pm
Posts: 6983
First name: Mike
Last Name: O'Melia
City: Huntsville
State: Alabama
Focus: Build
Status: Semi-pro
Steve, I took a different path with the block. I preshaped it with slant. Didn’t want to do that after installed. So, it took a little thinking to install.


Top
 Profile  
 
PostPosted: Tue Aug 20, 2019 7:33 am 
Offline
Koa
Koa

Joined: Sun Apr 25, 2010 4:46 pm
Posts: 527
First name: Mark
Last Name: McLean
City: Sydney
State: New South Wales
Zip/Postal Code: 2145
Country: Australia
Focus: Build
Status: Amateur
I’m doing a Doolin style one at the moment. i hope it turns out as good as Ed’s.


Top
 Profile  
 
PostPosted: Tue Aug 20, 2019 8:10 am 
Offline
Contributing Member
Contributing Member
User avatar

Joined: Wed Oct 08, 2008 11:36 am
Posts: 7380
Location: Southeast US
City: Lenoir City
State: TN
Zip/Postal Code: 37772
Country: US
Focus: Repair
Mike OMelia wrote:
Steve, I took a different path with the block. I preshaped it with slant. Didn’t want to do that after installed. So, it took a little thinking to install.


That makes sense, I could probably have taken more wood off and saved a bit of weight if I preshaped it. What do you think is easiest, would you preshape it again or shape it after gluing?

Here's mine.
Image

_________________
Steve Smith
"Music is what feelings sound like"


Top
 Profile  
 
PostPosted: Tue Aug 20, 2019 9:54 am 
Offline
Koa
Koa

Joined: Mon Feb 13, 2012 8:49 pm
Posts: 1041
First name: peter
Last Name: havriluk
City: granby
State: ct
Zip/Postal Code: 06035
Country: usa
Focus: Build
Status: Amateur
Ed, How did you cut the binding channel ln the beveled area?

_________________
Peter Havriluk


Top
 Profile  
 
PostPosted: Tue Aug 20, 2019 11:48 am 
Offline
Koa
Koa

Joined: Mon Dec 18, 2006 9:42 am
Posts: 1577
Location: United States
Sorry if I missed it, but what the heck is the bevel for? I know some people hug the guitar and dampen the top, so the bevel sort of stiffens the area they might otherwise dampen. Except for that, is it actually easier to play a bevel?


Top
 Profile  
 
PostPosted: Tue Aug 20, 2019 12:26 pm 
Offline
Contributing Member
Contributing Member
User avatar

Joined: Wed Oct 08, 2008 11:36 am
Posts: 7380
Location: Southeast US
City: Lenoir City
State: TN
Zip/Postal Code: 37772
Country: US
Focus: Repair
wbergman wrote:
Sorry if I missed it, but what the heck is the bevel for? I know some people hug the guitar and dampen the top, so the bevel sort of stiffens the area they might otherwise dampen. Except for that, is it actually easier to play a bevel?


After two or three hours of playing I have a groove in my arm where it rests on the edge between the top and side on the base bout. I am told the bevel will make that more comfortable so I'm building one to try.

_________________
Steve Smith
"Music is what feelings sound like"


Top
 Profile  
 
PostPosted: Tue Aug 20, 2019 12:46 pm 
Offline
Brazilian Rosewood
Brazilian Rosewood

Joined: Tue May 13, 2008 10:44 am
Posts: 6256
Location: Virginia
It seems like there are two kinds of bevels, one is for comfort and is built into the side of the guitar and the other (maybe better refereed to as an arm rest) is for free plate vibration and sits above the top of the guitar. Though both probably prevent the arm from blocking the vibration of the top to some extent the argument for the ladder is that you have a "normal" guitar.


Top
 Profile  
 
PostPosted: Tue Aug 20, 2019 1:18 pm 
Offline
Brazilian Rosewood
Brazilian Rosewood

Joined: Wed Feb 20, 2008 7:15 pm
Posts: 7380
First name: Ed
Last Name: Bond
City: Vancouver
Country: Canada
Focus: Build
Status: Professional
Peter, just used my regular binding setup. There's a bevel on the back as well, which did not work the first time as the angle was too steep, so I added a wedge and reduced the bevel angle as well as spreading it over a longer area, after doing so the regular kit worked. Between the wedge, back and top bevels, it was a very comfy guitar to play. The mission was to make a slope dread comfy, and the customer was well pleased. It sounded good too, not any real discernible change in tonality from the bevel...


Top
 Profile  
 
PostPosted: Tue Aug 20, 2019 2:11 pm 
Offline
Contributing Member
Contributing Member
User avatar

Joined: Mon Apr 16, 2012 12:47 pm
Posts: 2523
First name: Jay
Last Name: De Rocher
City: Bothell
State: Washington
Ed - What did you do with the bass side x-brace arm and the tone bars? Do they stop at the crease?

_________________
Once in a while you get shown the light in the strangest of places if you look at it right - Robert Hunter


Top
 Profile  
 
PostPosted: Tue Aug 20, 2019 5:06 pm 
Offline
Brazilian Rosewood
Brazilian Rosewood

Joined: Wed Feb 20, 2008 7:15 pm
Posts: 7380
First name: Ed
Last Name: Bond
City: Vancouver
Country: Canada
Focus: Build
Status: Professional
The t bars missed it and the x stops at the bend...



These users thanked the author meddlingfool for the post: J De Rocher (Tue Aug 20, 2019 5:21 pm)
Top
 Profile  
 
PostPosted: Tue Aug 27, 2019 5:48 pm 
Offline
Brazilian Rosewood
Brazilian Rosewood
User avatar

Joined: Wed Feb 20, 2008 9:12 pm
Posts: 6983
First name: Mike
Last Name: O'Melia
City: Huntsville
State: Alabama
Focus: Build
Status: Semi-pro
I need to pay more attention to this. Sorry... trying to finish my new shop, work on current builds. The bevel is a difficult beast. I keep thinking someone is gonna come at this with a different idea


Top
 Profile  
 
PostPosted: Tue Aug 27, 2019 5:49 pm 
Offline
Brazilian Rosewood
Brazilian Rosewood
User avatar

Joined: Wed Feb 20, 2008 9:12 pm
Posts: 6983
First name: Mike
Last Name: O'Melia
City: Huntsville
State: Alabama
Focus: Build
Status: Semi-pro
I will try to post some of my interior pics this weekend


Top
 Profile  
 
PostPosted: Tue Aug 27, 2019 10:52 pm 
Offline
Brazilian Rosewood
Brazilian Rosewood

Joined: Fri Dec 14, 2007 3:21 pm
Posts: 3389
Location: Alexandria MN
Just to play the devil's advocate, do those that have used bevels think they are worth all the extra effort?

Does the slight loss of real estate from the vibrating surface of the top and altered attachment point on the bass side affect the sound at all?

They look cool when done well that's for sure.

_________________
It's not what you don't know that hurts you, it's what you do know that's wrong.


Top
 Profile  
 
PostPosted: Wed Aug 28, 2019 8:56 am 
Offline
Contributing Member
Contributing Member
User avatar

Joined: Wed Oct 08, 2008 11:36 am
Posts: 7380
Location: Southeast US
City: Lenoir City
State: TN
Zip/Postal Code: 37772
Country: US
Focus: Repair
First one I've done so we'll see if it's worth the extra work when I'm done.

_________________
Steve Smith
"Music is what feelings sound like"


Last edited by SteveSmith on Wed Aug 28, 2019 7:25 pm, edited 1 time in total.


These users thanked the author SteveSmith for the post: Terence Kennedy (Thu Aug 29, 2019 9:19 am)
Top
 Profile  
 
PostPosted: Wed Aug 28, 2019 6:37 pm 
Offline
Brazilian Rosewood
Brazilian Rosewood
User avatar

Joined: Wed Feb 20, 2008 9:12 pm
Posts: 6983
First name: Mike
Last Name: O'Melia
City: Huntsville
State: Alabama
Focus: Build
Status: Semi-pro
The bevel is worth the effort. Its scary the first time u do it. And the second. It seems to get better with time. I cant tell a difference in sound. Its just so pretty, I cant help keep doing them.



These users thanked the author Mike OMelia for the post: Terence Kennedy (Thu Aug 29, 2019 9:19 am)
Top
 Profile  
 
Display posts from previous:  Sort by  
Post new topic Reply to topic  [ 23 posts ] 

All times are UTC - 5 hours


Who is online

Users browsing this forum: No registered users and 65 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:  
cron
Powered by phpBB® Forum Software © phpBB Group
phpBB customization services by 2by2host.com