Official Luthiers Forum!

Owned and operated by Lance Kragenbrink
It is currently Thu Apr 24, 2025 7:11 pm


All times are UTC - 5 hours





Post new topic Reply to topic  [ 7 posts ] 
Author Message
 Post subject:
PostPosted: Thu Nov 03, 2005 2:35 am 
Offline
Contributing Member
Contributing Member

Joined: Tue Jan 04, 2005 2:41 am
Posts: 457
Location: United States
OK, I am confused. i have seen articles and people who insert a backstrip between back plates when joining (which I did with my first martin kit). I also see people join back plates then route a groove for the strip. Does any of this even matter since everyone glues a back reinforcement strip and back braces are glued across? I just don't see how it could matter which way its done since its reinforced either way.

Also, I like the look of a thin ebony or maple strip. Are those of you that do that just thinning a binding strip for that?



Top
 Profile  
 
 Post subject:
PostPosted: Thu Nov 03, 2005 2:51 am 
Offline
Old Growth Brazilian
Old Growth Brazilian

Joined: Tue Dec 28, 2004 1:56 am
Posts: 10707
Location: United States
Personal preference.

I like to inlay the strip because the edges of the center strip do not need to be candle fitted when inlayed. In my thinking if you are butt fitting, to have a good joint you need to candle fit the planks to the center strip. This may be being picky but I like my seams to be tight joints even though they are reinforced. Reinforcement in my eyes is to be add strength not required strength.


Top
 Profile  
 
 Post subject:
PostPosted: Thu Nov 03, 2005 3:22 am 
Offline
Contributing Member
Contributing Member
User avatar

Joined: Thu May 12, 2005 5:46 am
Posts: 2988
Location: United States
I also inlay mine for the same reasons Michael gives. In the same breath however there are so many instruments made both ways that I doubt it matters.

_________________
Jim Watts
http://jameswattsguitars.com


Top
 Profile  
 
 Post subject:
PostPosted: Thu Nov 03, 2005 3:34 am 
Offline
Contributing Member
Contributing Member
User avatar

Joined: Mon Jan 03, 2005 7:40 am
Posts: 2694
Location: United States
First name: John
Last Name: How
City: Auburn
State: Ca
Country: USA
I used to glue the backstrip right in between the halves because that's how I thought it was done. I don't anymore because I use back strips that are not thick enough some times, but guess what, the old ones still sounded like guitars.

_________________
Tickle your guitar daily, and it'll tickle you back.


Top
 Profile  
 
 Post subject:
PostPosted: Thu Nov 03, 2005 3:48 am 
Offline
Contributing Member
Contributing Member

Joined: Mon Jan 03, 2005 7:46 am
Posts: 1315
Location: Branson, MO
First name: stan
Last Name: thomison
City: branson
State: mo
Zip/Postal Code: 65616
Country: united states
Focus: Build
Status: Professional
I have always and at Bourgeois the strips are joined (sandwiched) to each panel. Never a failure on any of mine, and I never heard of one while at Dana's. If I know Dana, had any problems arose with that seam, he would have done something else. It is strong. Can get the strips at Woodcrafters or other tool stores. I am not sure but think Dana may get them at Gurian(sorry if mispelled)Most of mine were binding strips. Once in, they can sanded down if needed some and not let fgo from heat/friction whatever proper term is from glue getting hot.


Top
 Profile  
 
 Post subject:
PostPosted: Thu Nov 03, 2005 6:05 am 
Offline
Brazilian Rosewood
Brazilian Rosewood

Joined: Mon Feb 21, 2005 6:16 am
Posts: 2244
Location: United States
First name: michael
Last Name: mcclain
City: pendleton
State: sc
Zip/Postal Code: 29670
Status: Professional
if you glue the back stripe between the back halves you are trusting the manufacturer's glue job to be a structural element of your guitar.

in simple back stripes maybe not so bad, but with ornate/multi-piece, e.g., herringbone, that is a lot of trust. and to rely on the back graft to take the strain would require it to be wider by at least the width of the stripe and thicker, at least to my demented way of thinking.

so i inlay mine, but i still want my basic back joint to be as tight as i can make it, i.e., i candle. the fact that it is hidden inside and out is no reason to rely on poorly made joints.


Top
 Profile  
 
 Post subject:
PostPosted: Thu Nov 03, 2005 6:27 am 
Offline
Koa
Koa

Joined: Sun Jun 12, 2005 9:38 am
Posts: 1059
Location: United States
I've sandwitched a back strip between purfling lines on all my guitars except one. The exception used a rather ornate mosaic pattern, and no way was I gonna have it become a structural element of the guitar. With the rest of my guitars, the back strip was at least as hard and durable as the back plates, and is usually the same material as the binding. The purfling I use -- either ebony, EIR, or maple, depending on the contrastive effect I want -- is rugged enough to handle any stress the back is likely to be subjected to.

I thickness my purfling and back strips on a drum sander (including the edges of the back strip) so they're as straight and flat as they're gonna get. As long as the back plates butted up with no light leakage, I've found that the purfling and strip also fit well.

Best,

Michael

_________________
Live to Play, Play to Live


Top
 Profile  
 
Display posts from previous:  Sort by  
Post new topic Reply to topic  [ 7 posts ] 

All times are UTC - 5 hours


Who is online

Users browsing this forum: No registered users and 12 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