Ken's Corner (Bass Forums Sponsored By KSB)

Go Back   Ken's Corner (Bass Forums Sponsored By KSB) > Double Basses > This Old Bass > Italian Bass School

Reply
 
Thread Tools Display Modes
  #1  
Old 02-20-2007, 09:24 AM
Arnold Schnitzer Arnold Schnitzer is offline
Senior Posting Member
 
Join Date: 01-22-2007
Location: Putnam County, NY
Posts: 453
Arnold Schnitzer is on a distinguished road
Default

Quote:
Originally Posted by Ken McKay View Post
Ken,

Could you please look inside there when you get a chance and tell me the bracing on the sides. I am at that point in my cornerless construction and need some help.
Hi Ken,

I think you do nothing good by putting braces in the ribs of your cornerless bass. The 90 degree attachment will likely lead to rib cracks, just like at the corners of old basses where the rib shrinks and the block stays put. If you are concerned about a small rib crack developing into a "zipper" and traveling around the whole body, you can run some linen strips across the ribs about every 8-10" or so. Put them in with weak hide glue and run them up onto the linings, otherwise you'll cause a new stress point where the linen ends. My experience is that these strips remain a tiny bit flexible, and while they stop small cracks from spreading, they don't cause new ones. I have been using this technique in all my handmade basses. Old Martin guitars have similar strips I've been told.
Reply With Quote
  #2  
Old 02-20-2007, 11:05 AM
Ken Smith's Avatar
Ken Smith Ken Smith is offline
Bassist, Luthier & Admin
 
Join Date: 01-18-2007
Location: Perkasie, PA
Posts: 4,864
Ken Smith is on a distinguished road
Wink Linen..

Quote:
Originally Posted by Arnold Schnitzer View Post
Hi Ken,

I think you do nothing good by putting braces in the ribs of your cornerless bass. The 90 degree attachment will likely lead to rib cracks, just like at the corners of old basses where the rib shrinks and the block stays put. If you are concerned about a small rib crack developing into a "zipper" and traveling around the whole body, you can run some linen strips across the ribs about every 8-10" or so. Put them in with weak hide glue and run them up onto the linings, otherwise you'll cause a new stress point where the linen ends. My experience is that these strips remain a tiny bit flexible, and while they stop small cracks from spreading, they don't cause new ones. I have been using this technique in all my handmade basses. Old Martin guitars have similar strips I've been told.
So in other words Doctor Schnitzer, 'don't throw out your old sheets'!

Gee, I wonder if I can sell them on Ebay under 'Luthier Supplies'..
Reply With Quote
  #3  
Old 11-06-2008, 04:16 PM
Martin Sheridan Martin Sheridan is offline
Posting Member
 
Join Date: 11-05-2008
Location: Sycamore, Illinois
Posts: 101
Martin Sheridan is on a distinguished road
Default Stradivari

Quote:
Originally Posted by Arnold Schnitzer View Post
Hi Ken,

I think you do nothing good by putting braces in the ribs of your cornerless bass. The 90 degree attachment will likely lead to rib cracks, just like at the corners of old basses where the rib shrinks and the block stays put. If you are concerned about a small rib crack developing into a "zipper" and traveling around the whole body, you can run some linen strips across the ribs about every 8-10" or so. Put them in with weak hide glue and run them up onto the linings, otherwise you'll cause a new stress point where the linen ends. My experience is that these strips remain a tiny bit flexible, and while they stop small cracks from spreading, they don't cause new ones. I have been using this technique in all my handmade basses. Old Martin guitars have similar strips I've been told.
Good input, Arnold. Stradivari, according to Saconni, used linen strips in his cellos. He said in the cellos where they had not been removed those cellos still had no rib cracks.
(Edit) I've been thinking about this, and although I agree with your logic, the addition of braces isn't that different from having corner blocks, is it? I made a Benedetto style archtop guitar a few years ago and although I didn't put them in that guitar Benedetto recommended them along with the linings. It might help add some stability? I do like the idea of the linen strips. I used them in my basses and cellos for awhile, but haven't done so lately.

Last edited by Martin Sheridan; 11-07-2008 at 03:53 PM. Reason: another thought
Reply With Quote
  #4  
Old 11-08-2008, 10:22 AM
Ken McKay Ken McKay is offline
Posting Member
 
Join Date: 02-04-2007
Location: Traverse City Michigan
Posts: 169
Ken McKay is on a distinguished road
Default

Linen linings in place on my cornerless bass.

Actually Martin, I did try some cross strips at first but took them out because I didn't like the feel. I think they made the sides too stiff. I had the ribs without mold and I could bonk them to assess their stiffness.

Just like Arnold, who advised me, I would advise you to forgo the wood and go with linen if anything.
Attached Thumbnails
Click image for larger version

Name:	draped.jpg
Views:	790
Size:	211.7 KB
ID:	705  Click image for larger version

Name:	linendone.jpg
Views:	851
Size:	206.4 KB
ID:	706  Click image for larger version

Name:	linen2.jpg
Views:	821
Size:	216.0 KB
ID:	707  
Reply With Quote
  #5  
Old 11-13-2008, 06:27 PM
Martin Sheridan Martin Sheridan is offline
Posting Member
 
Join Date: 11-05-2008
Location: Sycamore, Illinois
Posts: 101
Martin Sheridan is on a distinguished road
Default linings

Are your linings wider than normal?

That's going to be a nice bass. What do you use for varnish and sealer or ground?
Reply With Quote
  #6  
Old 11-15-2008, 10:03 AM
Ken McKay Ken McKay is offline
Posting Member
 
Join Date: 02-04-2007
Location: Traverse City Michigan
Posts: 169
Ken McKay is on a distinguished road
Default

Quote:
Originally Posted by Martin Sheridan View Post
Are your linings wider than normal?

That's going to be a nice bass. What do you use for varnish and sealer or ground?
I hope so Marting, thanks.

Olde-Italian authentic varnish of course.
Reply With Quote
  #7  
Old 11-12-2009, 02:34 AM
Matthew Tucker's Avatar
Matthew Tucker Matthew Tucker is offline
Senior Posting Member
 
Join Date: 02-19-2007
Location: Sydney, Australia
Posts: 427
Matthew Tucker is on a distinguished road
Send a message via Skype™ to Matthew Tucker
Default

Have we seen this one before? Supposedly Italian.


Reply With Quote
  #8  
Old 11-19-2009, 12:50 PM
Ken Smith's Avatar
Ken Smith Ken Smith is offline
Bassist, Luthier & Admin
 
Join Date: 01-18-2007
Location: Perkasie, PA
Posts: 4,864
Ken Smith is on a distinguished road
Cool oops..

Quote:
Originally Posted by Matthew Tucker View Post
Have we seen this one before? Supposedly Italian.


Sorry for the late reply Matt...

Yes, to my eye it looks very Italian or could be Spanish as well.

Where is this bass?
Reply With Quote
Reply


Currently Active Users Viewing This Thread: 10 (0 members and 10 guests)
 
Thread Tools
Display Modes

Posting Rules
You may not post new threads
You may not post replies
You may not post attachments
You may not edit your posts

BB code is On
Smilies are On
[IMG] code is On
HTML code is Off
Forum Jump


All times are GMT -4. The time now is 06:49 PM.


Powered by vBulletin® Version 3.7.2
Copyright ©2000 - 2025, Jelsoft Enterprises Ltd.
Copyright © 2007 - Ken Smith Basses, LTD. (All Rights Reserved)