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Unusual neck joint using wedges
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Wayland
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Joined: 04 Aug 2017
Posts: 12

PostPosted: Wed Aug 30, 2017 2:07 pm    Post subject: Robo-jig Reply with quote



Thanks Ken. One of the fun parts was coming up with a way to quickly hold the top and back together and level up either side of the joint. I'd seen the conventional straps and clamps but didn't want to spend money buying a lot of them so I made this swinging multi-clamp jig. You just put it in unglued, and tighten everything up the swing iyt open glue the joint and swing it shut tweaking as necessary. It actually worked, needs some refining of course. I just need another wreck to turn up so I can use it again.
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rs
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Joined: 14 Jan 2009
Posts: 188
Location: Missouri

PostPosted: Wed Aug 30, 2017 3:33 pm    Post subject: Reply with quote

That looks good. On violins I make, I usually find the neck settles down about 2 mm or so in about 6 months. On repairs, not much change. One thing you could do to change the neck angle is to pop the top off and re-glue the top while flexing the neck down a bit. If a small slot were cut in the top where the neck comes into it, the top would still line up all around. Players don't usually complain about neck angle, though. Only if the string height is high or low compared to the board.
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Dave Chandler
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Joined: 31 Oct 2007
Posts: 682
Location: Mt Mitchell in North Carolina

PostPosted: Wed Aug 30, 2017 9:55 pm    Post subject: Reply with quote

RS makes a good suggestion, something I've done before, but didn't come to mind. The photo of the finished violin is really stunning, it looks fantastic.
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Wayland
Junior Member


Joined: 04 Aug 2017
Posts: 12

PostPosted: Thu Aug 31, 2017 2:53 am    Post subject: Thanks Reply with quote

I must thank you all for your encouragement and helpful comments through-out this project.
Lots of respects from me
Jim Cooper
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Mat Roop
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Joined: 24 Mar 2007
Posts: 839
Location: Wyoming Ontario

PostPosted: Thu Aug 31, 2017 8:57 am    Post subject: Reply with quote

Nice job Wayland....
an easy unorthodox fix for your high neck angle...
Remove the fingerboard, Glue in an ebony finger board wedge with thick end at the nut... probably will need less than a mm or so. You might want to fully assess the overall fingerboard thickness to be sure it is on the thin side to make playing easier. Usually the fb is 4.5 mm along the edges, you might want to drop it to 4.3 with a 42mm radius surface... that way when you add the wedge it won't be too thick.... and don't forget to fully carve out the underside of the fb.
Also, while the fb is off, check the stop length ratio so that if not quite right, you can slightly adjust with the nut before all is glued back.
Cheers!... Mat
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