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Filling up cracks and gaps on stick and frog

 
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emil_violin
Junior Member


Joined: 14 Aug 2015
Posts: 2
Location: Louisiana

PostPosted: Mon Aug 17, 2015 1:34 pm    Post subject: Filling up cracks and gaps on stick and frog Reply with quote

Hello,
what glue is used to mix with wood dust to fill up cracks/gaps and how does the process work exactly? I am talking about damage done by the little finger and thumb on the stick for an example. I am not talking about complicated cracks on the tip and frog with splines, metal pins, re-drilling holes etc.
I have tried 3 times using different glues to fix an ebony frog. When the glue dried and I started sanding the frog the glued part came off.
I have taken a bow rehair class already so I have some basic skills and knowledge.

Thanks!
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Mat Roop
Senior Member


Joined: 24 Mar 2007
Posts: 885
Location: Wyoming Ontario

PostPosted: Tue Aug 18, 2015 8:14 am    Post subject: Reply with quote

What kind of glue did you use and how did you prepare the surface ?
Pics of the damage would be helpful.
Glue and dust is generally ok for cracks, but if you are building up an area, I would be using thin veneer of matching ebony and G2 epoxy. You need to prep the surface to raw wood for the glue to take hold. New glue on old glue will not work.
If the wear is just surface, and not creating any problems, I would be tempted to just leave it... but that depends on a whole lot of factors and desires.
Cheers, Mat
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Franciscus
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Joined: 11 Jan 2014
Posts: 43
Location: Tuzla, Bosnia

PostPosted: Tue Aug 18, 2015 10:59 am    Post subject: Reply with quote

As far as I know, all wood species used in the productions of bows contain more or less natural oils, which implies that the gluing procedure have to include very careful preparation of gluing surfaces. Look here: http://www.wood-database.com/wood-articles/gluing-oily-tropical-hardwoods/
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emil_violin
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Joined: 14 Aug 2015
Posts: 2
Location: Louisiana

PostPosted: Wed Aug 19, 2015 12:05 pm    Post subject: reply Reply with quote

Hi, thanks for replies. How do you post pictures here?
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Emil
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Mat Roop
Senior Member


Joined: 24 Mar 2007
Posts: 885
Location: Wyoming Ontario

PostPosted: Wed Aug 26, 2015 10:29 pm    Post subject: Reply with quote

here is the instructions on posting photos...
https://www.violins.ca/forums/viewtopic.php?t=1344
quite easy really...
Good Luck!... Mat
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