FORUM

Please have a look at our Forum Rules. Lets keep this forum an enjoyable place to visit.

A A A
Avatar

Please consider registering
guest

sp_LogInOut Log In sp_Registration Register

Register | Lost password?
Advanced Search

— Forum Scope —






— Match —





— Forum Options —





Minimum search word length is 3 characters - maximum search word length is 84 characters

sp_Feed Topic RSS sp_TopicIcon
The Broken
Topic Rating: 0 Topic Rating: 0 Topic Rating: 0 Topic Rating: 0 Topic Rating: 0 Topic Rating: 0 (0 votes) 
Avatar
Oliver
NC
King
Regulars
June 19, 2011 - 8:17 am
Member Since: February 28, 2011
Forum Posts: 2439
sp_UserOfflineSmall Offline

If this is the BREAKROOM then this is the BROKEN.  Violin was sitting on a box and exploded overnight.  All by itself.
The instrument was out of warranty.

The break was very clean so I made a simple fixture and reset the neck using household gelatin.

So far so good …. if it holds !

The violin body is Kevlar and I'm not convinced that it works well in a glue situation.

PS   If you zoom in on picture (right click), you can "skate" around the image.

 

 

When you come to a fork in the road, take it.

Avatar
Pikachu
Pallet Town
Regular advisor
Members

Regulars
June 19, 2011 - 4:38 pm
Member Since: April 6, 2011
Forum Posts: 154
sp_UserOfflineSmall Offline

I don't know how well this would work with a violin, but when I worked with kevlar and carbon fiber, we always used a 2-part epoxy to hold things together. The stuff was pretty noxious, but it ended up being pretty strong.

Avatar
Oliver
NC
King
Regulars
June 19, 2011 - 5:58 pm
Member Since: February 28, 2011
Forum Posts: 2439
sp_UserOfflineSmall Offline

The mystery is what the manufacturer used in the first place ?  There was no evidence of any bonding adhesive on either piece.  There MAY have been a very thin, ( 0.003" ?) clear, glaze on the mating surfaces

Also, the usual violin practice is to use a glue that permits taking things apart later which hide glue does well  i.e. reverse with elevated temperatures.  ( maybe 150 degrees )

I may have to go to a permanent 2 part adhesive if the gelatin doesn't hold but at least I will have tried it and, hopefully, it will also fail-safe the next time (not while I'm playing it!).

 

When you come to a fork in the road, take it.

Avatar
Fiddlerman
Fort Lauderdale
June 19, 2011 - 10:03 pm
Member Since: September 26, 2010
Forum Posts: 11694

I'll ask my Luthier friend what one should use. I know that he glued the ribs, back and belly with a heat glue that I think he made himself. I'll see what I can find out.

"The richest person is not the one who has the most,
but the one who needs the least."

Avatar
LoopyLoonyLuna
Advanced member
Members
June 19, 2011 - 11:50 pm
Member Since: May 14, 2011
Forum Posts: 61
sp_UserOfflineSmall Offline

If that happened in my house I would blame the cats, or if it happened this summer the heat. Actually is the pieces were attached with a hot glue heat may be a problem. Hot glue failure is a real issue where I live. 

 

I hope you gelatin repair holds, but if it does not you might be able to use hot glue with a very high melting point. Good luck with it.

Avatar
Oliver
NC
King
Regulars
June 24, 2011 - 3:40 pm
Member Since: February 28, 2011
Forum Posts: 2439
sp_UserOfflineSmall Offline

It's about 4-5 days since I used the hot gelatine and all looks good.  I had also installed a dowel in the joint to further strengthen the junction and maybe that is helping.

I have no idea how long all this glue has to last until it is past some critical point ?

When you come to a fork in the road, take it.

Avatar
Fiddlerman
Fort Lauderdale
June 24, 2011 - 11:06 pm
Member Since: September 26, 2010
Forum Posts: 11694

Seems like you did a good job then. Happy to hear it.

"The richest person is not the one who has the most,
but the one who needs the least."

Forum Timezone: America/New_York

Most Users Ever Online: 231

Currently Online: yellowdresses, BillyG
39 Guest(s)

Currently Browsing this Page:
1 Guest(s)

Members Birthdays
sp_BirthdayIcon
Today None
Upcoming HeadCheese, Ginnysg, lakelivr, harvestman, fiddlinmama

Top Posters:

coolpinkone: 3754

Mad_Wed: 2849

Barry: 2661

Fiddlestix: 2637

Oliver: 2439

DanielB: 2379

Member Stats:

Guest Posters: 1

Members: 3549

Moderators: 0

Admins: 2

Forum Stats:

Groups: 16

Forums: 56

Topics: 6439

Posts: 80293

Newest Members:

coreshanethi, wisco kid, Yael, tobypaul, Yogesh Thakur, Eudora

Administrators: Fiddlerman: 11694, KindaScratchy: 1650