Official Luthiers Forum!

Owned and operated by Lance Kragenbrink
It is currently Fri Nov 29, 2024 6:44 am


All times are UTC - 5 hours


Forum rules


Be nice, no cussin and enjoy!




Post new topic Reply to topic  [ 143 posts ]  Go to page Previous  1, 2, 3, 4, 5, 6  Next
Author Message
PostPosted: Mon Jul 27, 2020 9:26 pm 
Offline
Contributing Member
Contributing Member

Joined: Fri Jan 11, 2013 2:26 pm
Posts: 488
First name: Carl
Last Name: Dickinson
City: Forest Ranch
State: California
Zip/Postal Code: 95942
Country: USA
Focus: Build
Status: Amateur
Well, it didn't work. Here's what happened....
Attachment:
IMG_20200727_151314_3.jpg

Attachment:
IMG_20200727_151328_0.jpg


I put it back up on the shelf with the other parts and will address it another time. I have a laminating form for that shape so will try to use that as a fix someday. idunno


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


Top
 Profile  
 
PostPosted: Tue Jul 28, 2020 1:35 am 
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
Dang...:(



These users thanked the author meddlingfool for the post: Bri (Tue Jul 28, 2020 2:54 am)
Top
 Profile  
 
PostPosted: Tue Jul 28, 2020 7:04 am 
Offline
Brazilian Rosewood
Brazilian Rosewood

Joined: Sun Mar 30, 2008 8:20 am
Posts: 5968
Clay S. wrote:
CarlD wrote:
Well, it's my turn.....
Got to the shop this afternoon and found the side I bent yesterday wasn't bookmatched. I know you can't see both sides at the same time, but it bugged me enough that I had to try again. An hour of flattening with my wife's old iron. Back in the bender sandwich. I'll check it tomorrow. It's Chechin. I used water and windex and it bent readily.
I'd heard of this happening to others but first time for me.


You are in good company. Romanillos mentions in his book a guitar Torres built with matched sides bent "wrong".
I did that on a set of BRW sides I laminated with epoxy. With laminated sides there's no going back. They hung around the shop for a couple of years until I decided to build a guitar to try out some new ideas. I matched them up with a back that needed a little bit of wood patched in and put the thing together. It turned out to be a good sounding little guitar. Now when I pick it up I don't even think about all the little flaws.


Hi Carl,
Remember I said I didn't think about all the little flaws? You just reminded me of a couple. laughing6-hehe Another reason the sides laid around the shop were the buckle fractures that occurred during the lamination. Usually the epoxy wets out the veneer enough for it to conform to the form, but for some reason it didn't. I could have retouched those areas before finishing to make them less obvious, but I didn't.
I used CA to glue them but hide glue would have been a better choice.


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


Top
 Profile  
 
PostPosted: Tue Jul 28, 2020 9:08 am 
Offline
Brazilian Rosewood
Brazilian Rosewood

Joined: Tue May 13, 2008 10:44 am
Posts: 6256
Location: Virginia
Clay S. wrote:
Clay S. wrote:
CarlD wrote:
Well, it's my turn.....
Got to the shop this afternoon and found the side I bent yesterday wasn't bookmatched. I know you can't see both sides at the same time, but it bugged me enough that I had to try again. An hour of flattening with my wife's old iron. Back in the bender sandwich. I'll check it tomorrow. It's Chechin. I used water and windex and it bent readily.
I'd heard of this happening to others but first time for me.


You are in good company. Romanillos mentions in his book a guitar Torres built with matched sides bent "wrong".
I did that on a set of BRW sides I laminated with epoxy. With laminated sides there's no going back. They hung around the shop for a couple of years until I decided to build a guitar to try out some new ideas. I matched them up with a back that needed a little bit of wood patched in and put the thing together. It turned out to be a good sounding little guitar. Now when I pick it up I don't even think about all the little flaws.


Hi Carl,
Remember I said I didn't think about all the little flaws? You just reminded me of a couple. laughing6-hehe Another reason the sides laid around the shop were the buckle fractures that occurred during the lamination. Usually the epoxy wets out the veneer enough for it to conform to the form, but for some reason it didn't. I could have retouched those areas before finishing to make them less obvious, but I didn't.
I used CA to glue them but hide glue would have been a better choice.


That's actually pretty impressive and I thought if anything CA glue would make it stain and show more.

I'm on my 67th guitar now and I have NEVER cracked sides before till I got hold of this really old BRW and most luthiers tell me, pffft it bends like butter! I've cracked 4 sides two of which were in a bending machine which I purchased becasue I got a sever case of the yipps and thought I could never bend sides again. It must be the the wood!


Top
 Profile  
 
PostPosted: Wed Jul 29, 2020 6:29 am 
Offline
Cocobolo
Cocobolo

Joined: Wed Jan 08, 2020 12:28 pm
Posts: 195
First name: Chuck
Last Name: Skarsaune
City: Butler
State: TN
Country: United States
Focus: Build
Status: Amateur
Glued a bridge on last night. I had a little trouble with the last one I glued on shifting when clamped, so I checked alignment repeatedly as I got it clamped up.

Drilled the pin holes this morning and took the clamps & cauls off.

dang thing is ~5/16" off side to side, like it needs to be shifted a whole pin hole over. Got so laser focused on making sure it was right front to back that I completely spaced the side to side.

Of course I scraped the nice sunburst amber lacquer off for a good glue surface below the bridge, so I'll have to fix that too.

Ugh.


Top
 Profile  
 
PostPosted: Wed Jul 29, 2020 12:32 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
That sucks.

I double stick tape the bridge where it’s going to go. Then check positioning very carefully. Then I drill the two e string holes and use the bits to hold the bridge while gluing so it can’t slide around...


Top
 Profile  
 
PostPosted: Wed Jul 29, 2020 1:15 pm 
Offline
Brazilian Rosewood
Brazilian Rosewood
User avatar

Joined: Thu Feb 12, 2009 12:12 pm
Posts: 3293
First name: Bryan
Last Name: Bear
City: St. Louis
State: Mo
Country: USA
Focus: Build
Status: Amateur
That's pretty much what I do too.

I tape off the bridge area before finishing so I put down tape over where the bridge will land and carefully mark a center-line on the tape. I use my home made version of the saddlematic to locate the bridge distance according to the saddle slot and make sure the center-line on the tape matches the center marking on the bridge. Then I clamp it all down as if I were gluing it in place. I double check everything and then drill through the two E holes into the top and through the bridge caul. I use drill bits in these holes to ensure it doesn't move while I cut the tape around the bridge. The saddlematic gives me the North/South location and the center-line takes care of the East/West.

_________________
Bryan Bear PMoMC

Take care of your feet, and your feet will take care of you.


Top
 Profile  
 
PostPosted: Wed Jul 29, 2020 2:36 pm 
Offline
Brazilian Rosewood
Brazilian Rosewood

Joined: Tue May 13, 2008 10:44 am
Posts: 6256
Location: Virginia
Yeah that does suck but you can recover. I use 3/16in bolts to align in the outer Ee pin holes.


Top
 Profile  
 
PostPosted: Wed Jul 29, 2020 2:50 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 think it's a consensus, we all use bolts or pins to keep the bridge aligned while it's being glued.

_________________
Steve Smith
"Music is what feelings sound like"


Top
 Profile  
 
PostPosted: Wed Jul 29, 2020 3:32 pm 
Offline
Cocobolo
Cocobolo

Joined: Wed Jan 08, 2020 12:28 pm
Posts: 195
First name: Chuck
Last Name: Skarsaune
City: Butler
State: TN
Country: United States
Focus: Build
Status: Amateur
Yep, I can recover.
I’ve done screws thru the pin holes for bridge reglues - going to adopt that on new installs to prevent shifting.
And make myself a saddlematic type jig.

And pay more attention, lol. Measure many times, cut once.

It’s funny (not really) but I’ve been studying mindfulness. Obviously I’m not practicing it very well.


Top
 Profile  
 
PostPosted: Wed Jul 29, 2020 3:33 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
Happens to us all

_________________
Steve Smith
"Music is what feelings sound like"


Top
 Profile  
 
PostPosted: Thu Jul 30, 2020 3:14 pm 
Offline
Contributing Member
Contributing Member

Joined: Sun Feb 17, 2013 4:58 pm
Posts: 1449
First name: Ed
Last Name: Minch
City: Chestertown
State: MD
Zip/Postal Code: 21620
Country: United States
Focus: Build
Status: Amateur
Speaking of bridges - very timely. I build about one a year, so never get really comfortable with some procedures. Locating a bridge today with my home made saddle-matic. Nothing Matic about it apparently. Put the wrong side of the saddle against the jig


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


Top
 Profile  
 
PostPosted: Thu Jul 30, 2020 4:02 pm 
Offline
Brazilian Rosewood
Brazilian Rosewood
User avatar

Joined: Thu Feb 12, 2009 12:12 pm
Posts: 3293
First name: Bryan
Last Name: Bear
City: St. Louis
State: Mo
Country: USA
Focus: Build
Status: Amateur
Oh man, that hurts! That is the trouble with non-belly bridges. I have caught myself almost doing that before. In fact, you post just made me get up and double check the two guitars I'm working on right now.

_________________
Bryan Bear PMoMC

Take care of your feet, and your feet will take care of you.


Top
 Profile  
 
PostPosted: Thu Jul 30, 2020 7:18 pm 
Offline
Cocobolo
Cocobolo

Joined: Thu Nov 27, 2014 10:35 am
Posts: 364
Location: Hopkinton, MA
First name: Robert
Last Name: Ionta
City: Hopkinton
State: Massachusetts
Zip/Postal Code: 01748
Country: USA
Focus: Build
Status: Amateur
Oh ouch. What would you think of a Gib-ish reverse belly bridge?


Top
 Profile  
 
PostPosted: Thu Jul 30, 2020 7:37 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
Oh dang..::(


Top
 Profile  
 
PostPosted: Thu Jul 30, 2020 9:17 pm 
Offline
Brazilian Rosewood
Brazilian Rosewood

Joined: Tue May 13, 2008 10:44 am
Posts: 6256
Location: Virginia
bionta wrote:
Oh ouch. What would you think of a Gib-ish reverse belly bridge?


Hahahha I wonder if that's what started that God awful design in the first place :D

Hey! At least there is precedence. It's a great idea actually.


Top
 Profile  
 
PostPosted: Thu Jul 30, 2020 11:17 pm 
Offline
Brazilian Rosewood
Brazilian Rosewood
User avatar

Joined: Wed Sep 24, 2008 8:55 pm
Posts: 3820
Location: Taiwan
First name: Tai
Last Name: Fu
City: Taipei
Country: Taiwan
Focus: Repair
Status: Semi-pro
Image

If you look carefully (not), you notice a separated seam in the area and pitch pockets everywhere.

What happened is I glued the top to the side in sessions, one area at a time, and I misjudged where the center seam is (the glue line is VERY hard to see) and so I had glued the neck portion off by about 4mm. So I had to heat and unglue that section and reposition it. Unfortunately it raised some sap and separated the center seam in the heel area. Fortunately they sand out, and the underside has been reinforced very well, and a fingerboard will go over that. I will also route a pocket where the separation is to accommodate the truss rod, so all is good. One bonus is that portion is likely torrified so will result in better tone.

_________________
Cat-gut strings are made from kitten guts, stretched out to near breaking point and then hardened with grue saliva. As a result these give a feeling of Pain and anguish whenever played, and often end up playing themselves backwards as part of satanic rituals.

Typhoon Guitars
http://www.typhoon-guitars.com


Top
 Profile  
 
PostPosted: Fri Jul 31, 2020 2:03 am 
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
That particular section is where most of the tone is so you got lucky...



These users thanked the author meddlingfool for the post: Colin North (Fri Jul 31, 2020 2:14 am)
Top
 Profile  
 
PostPosted: Fri Jul 31, 2020 7:22 am 
Offline
Contributing Member
Contributing Member

Joined: Sun Feb 17, 2013 4:58 pm
Posts: 1449
First name: Ed
Last Name: Minch
City: Chestertown
State: MD
Zip/Postal Code: 21620
Country: United States
Focus: Build
Status: Amateur
I think I can hide the two holes next to the bridge adequately. The guitar needs the pyramid bridge because it has a Stauffer neck


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


Top
 Profile  
 
PostPosted: Fri Jul 31, 2020 7:37 am 
Offline
Brazilian Rosewood
Brazilian Rosewood

Joined: Tue May 13, 2008 10:44 am
Posts: 6256
Location: Virginia
Ed Minch that looks fantastic!


Top
 Profile  
 
PostPosted: Fri Jul 31, 2020 8:59 am 
Offline
Brazilian Rosewood
Brazilian Rosewood

Joined: Sun Mar 30, 2008 8:20 am
Posts: 5968
From vintage Martin.com:
http://vintagemartin.com/Martin1837HudsonSt_B033r.jpg

Hi Ed,
I think you pointed out to me the decorative inlays some of the old guitars incorporated around their bridges. If the bridge footprint doesn't cover the holes this might be a way to bury them and add a little more embellishment to the guitar.


Top
 Profile  
 
PostPosted: Fri Jul 31, 2020 9:15 am 
Offline
Koa
Koa
User avatar

Joined: Tue Feb 26, 2008 6:19 am
Posts: 1560
First name: Richard
Last Name: Hutchings
City: Warwick
State: RI
Zip/Postal Code: 02889
Country: United States
Focus: Build
Status: Amateur
Um... I don't see any holes.

_________________
Hutch

Get the heck off the couch and go build a guitar!!!!


Top
 Profile  
 
PostPosted: Fri Jul 31, 2020 12:18 pm 
Offline
Contributing Member
Contributing Member

Joined: Sun Feb 17, 2013 4:58 pm
Posts: 1449
First name: Ed
Last Name: Minch
City: Chestertown
State: MD
Zip/Postal Code: 21620
Country: United States
Focus: Build
Status: Amateur
Thanks J

That interesting decoration on the head is adapted from one that JG Stauffer did in the very early 19th c, but his metal plate was on the back. My ivoroid plate is on the front

Clay - great idea. I have the holes patched and if they show poorly under that Endurovar you sent, then there is an option/

BP - I like your attitude

Ed


Top
 Profile  
 
PostPosted: Tue Aug 04, 2020 10:20 am 
Offline
Koa
Koa

Joined: Thu Jan 11, 2018 9:19 am
Posts: 530
Location: St. Charles MO
First name: Karl
Last Name: Borum
State: MO
Zip/Postal Code: 63303
Country: United States
Focus: Build
Status: Amateur
My last build: I mistakenly routed the back instead of the front. ..... now everybody knows the back purfling is a dum-dum feature.


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

_________________
Measure Twice,

Karl Borum


Last edited by Kbore on Tue Aug 04, 2020 11:47 am, edited 1 time in total.

Top
 Profile  
 
PostPosted: Tue Aug 04, 2020 10:26 am 
Offline
Brazilian Rosewood
Brazilian Rosewood
User avatar

Joined: Wed Sep 24, 2008 8:55 pm
Posts: 3820
Location: Taiwan
First name: Tai
Last Name: Fu
City: Taipei
Country: Taiwan
Focus: Repair
Status: Semi-pro
I did that with rosettes when for some reason the channel is too loose.

_________________
Cat-gut strings are made from kitten guts, stretched out to near breaking point and then hardened with grue saliva. As a result these give a feeling of Pain and anguish whenever played, and often end up playing themselves backwards as part of satanic rituals.

Typhoon Guitars
http://www.typhoon-guitars.com


Top
 Profile  
 
Display posts from previous:  Sort by  
Post new topic Reply to topic  [ 143 posts ]  Go to page Previous  1, 2, 3, 4, 5, 6  Next

All times are UTC - 5 hours


Who is online

Users browsing this forum: No registered users and 69 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