Violin Forum/Message Board Forum Index Violin Forum/Message Board
Provided by Violin Vision
 
 FAQFAQ   SearchSearch   MemberlistMemberlist   UsergroupsUsergroups   RegisterRegister 
 ProfileProfile   Log in to check your private messagesLog in to check your private messages   Log inLog in 

Best way to reinforce a rib crack

 
Post new topic   Reply to topic    Violin Forum/Message Board Forum Index -> Violin Making and Restoration Forum
View previous topic :: View next topic  
Author Message
Jack H.
Super Member


Joined: 24 Mar 2007
Posts: 346
Location: Israel

PostPosted: Fri Sep 14, 2007 8:49 am    Post subject: Best way to reinforce a rib crack Reply with quote

that butts agains the end block.
the crack is a flame crack. and it is right up against the end block...
Just need a different view.

Thansk

jack H.
Back to top
View user's profile Send private message Send e-mail
Jeffrey Holmes
Member


Joined: 03 Apr 2007
Posts: 90
Location: Ann Arbor

PostPosted: Fri Sep 14, 2007 4:33 pm    Post subject: Reply with quote

Those are a pain, Jack.

Unfortunately, since the movement of the rib against the block will eventually turn that type of crack into a hinge, I usually end up doubling the rib on the inside using a relatively long scarf joint.
_________________
Jeffrey

http://holmesviolins.com
Back to top
View user's profile Send private message Visit poster's website
Jack H.
Super Member


Joined: 24 Mar 2007
Posts: 346
Location: Israel

PostPosted: Sat Sep 15, 2007 2:20 am    Post subject: Reply with quote

I wish it was a hinge...
rigth now it is totally apart!
Back to top
View user's profile Send private message Send e-mail
Jeffrey Holmes
Member


Joined: 03 Apr 2007
Posts: 90
Location: Ann Arbor

PostPosted: Sat Sep 15, 2007 5:41 pm    Post subject: Reply with quote

Looks like you'll be moving on to forms, counter-forms, chalk and a very sharp scraper...
_________________
Jeffrey

http://holmesviolins.com
Back to top
View user's profile Send private message Visit poster's website
Ed
Junior Member


Joined: 02 Apr 2007
Posts: 17
Location: Merrimack, NH USA

PostPosted: Sat Sep 15, 2007 7:00 pm    Post subject: Reply with quote

Jeffrey, do you find that the a rib which has been doubled is always much stiffer than before (even though it is the same thickness of the original after finishing)?
Back to top
View user's profile Send private message Send e-mail
Jeffrey Holmes
Member


Joined: 03 Apr 2007
Posts: 90
Location: Ann Arbor

PostPosted: Sat Sep 15, 2007 11:05 pm    Post subject: Reply with quote

Hi Ed;

I think a doubled rib tends to be slightly stiffer due to the lamination, but I wouldn’t say “much stiffer”. If doubling in the middle of a bout it can be compensated for if it appears to be a problem.

In Jack’s case, the crack is close to the block, so I don't think this will be an issue. The thickest portion of the doubling would be where the rib attaches to the block. The scarf joint would extend into the free area of the rib.
_________________
Jeffrey

http://holmesviolins.com
Back to top
View user's profile Send private message Visit poster's website
Display posts from previous:   
Post new topic   Reply to topic    Violin Forum/Message Board Forum Index -> Violin Making and Restoration Forum All times are GMT - 4 Hours
Page 1 of 1

 
Jump to:  
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 vote in polls in this forum


Powered by phpBB © 2001, 2005 phpBB Group