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Restoration of 100 year old student violin

 
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rabn
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Joined: 08 May 2013
Posts: 10
Location: Canada

PostPosted: Sun Jun 09, 2013 8:45 pm    Post subject: Restoration of 100 year old student violin Reply with quote

My first post and first restoration project.
The violin was at the bottom of a box of physics books I picked up for $5. The violin was completely in pieces including the belly and back. There is one rib missing, no bass bar, and the linings are missing.
I've made two violins and I'm working on three more.
My goal is to make it playable as a student violin without touching the varnish.
I've made the new missing rib, reglued the belly and back, and have regraduated the belly and back. Tap tones for the back is F natural and for the belly C natural. I know the back should be about one tone higher than the belly. So my question how do I bring the tone of the belly closer to the back or the back closer to the belly? Of course once I take off the wood it is too late.
Thank you for any suggestions.
Ray
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ctviolin
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Joined: 07 May 2009
Posts: 961
Location: Roswell

PostPosted: Mon Jun 10, 2013 12:54 am    Post subject: Re: Restoration of 100 year old student violin Reply with quote

rabn wrote:
Tap tones for the back is F natural and for the belly C natural. I know the back should be about one tone higher than the belly. So my question how do I bring the tone of the belly closer to the back or the back closer to the belly? Of course once I take off the wood it is too late.
Thank you for any suggestions.
Ray


Why?
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rabn
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PostPosted: Mon Jun 10, 2013 1:01 am    Post subject: Reply with quote

I'm still new to building and restoring violins, so what I am doing is checking my source with more experienced people.
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pmccombs
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Joined: 15 Jan 2013
Posts: 87
Location: Utah

PostPosted: Mon Jun 10, 2013 2:16 am    Post subject: Reply with quote

rabn wrote:
I'm still new to building and restoring violins, so what I am doing is checking my source with more experienced people.


I'm new to the art of violin making too, but I have noticed that the general sentiment on this forum is that plate tuning is violin voodoo. Wink I'm not sure what the history of the practice is, but it's unlikely to have originated with the old Masters. I think it's an innovation that some here believe ought to be done away with. I think their argument is a good one, and I happen to agree with it in principle. I have never tuned a violin plate, and If I'm not mistaken, the advice you will get here is probably, "don't bother with it."
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ctviolin
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Joined: 07 May 2009
Posts: 961
Location: Roswell

PostPosted: Mon Jun 10, 2013 3:11 am    Post subject: Reply with quote

pmccombs wrote:
rabn wrote:
I'm still new to building and restoring violins, so what I am doing is checking my source with more experienced people.


I'm new to the art of violin making too, but I have noticed that the general sentiment on this forum is that plate tuning is violin voodoo. Wink I'm not sure what the history of the practice is, but it's unlikely to have originated with the old Masters. I think it's an innovation that some here believe ought to be done away with. I think their argument is a good one, and I happen to agree with it in principle. I have never tuned a violin plate, and If I'm not mistaken, the advice you will get here is probably, "don't bother with it."


violin-voodoo? Naw!
Used in particular circumstances - with a particular background - it (the voodoo, that is) may not hurt anything, and may well be used to an advantage by some. (not me, but some - yes)

Well, the "why" of mine is questioning whether you're trying to restore or rebuild an old violin - or - trying to make it fit some modern scheme you have in mind - which it was probably not made to accomplish originally.

I'm just curious if there is anything there to indicate that a "code" of sorts was (using specific notes for tuning the plates or something of the sort) used on the original plates?

If not, then simply returning the plates (or thinning them, if you consider them left too thick - which, if it was a factory made STUDENT fiddle, then, it probably was left thick intentionally) to what you would consider an appropriate thickness for the violin, as it was MADE THEN, may well be your best option.

After all you're stuck with the original wood, and the original arching, the original design, and the varnish of 100 years ago, right? So how or why, are you going to accomplish a "modern tuning requirement" on these things, these plates?

Just curious.
Only my opinion. Nothing more.

Probably they (the original plates) weren't made to accomplish your own particular modern tailoring to some specific notes, or some *specific plate frequency relationship*...

Again, just suggesting.

Rebuilding - is often an interesting thing , but in my opinion, you CANNOT easily rebuild something 100 years old - to modern (arbitrary) building specs. I don't believe it works that way.

Trying to think of what (ideas - rules?) the maker was attempting to comply with originally, might be a more workable idea for a rebuild of an old violin.

I don't want to tell you what to do, as I'm not there, and I cannot see what you have in front of you.
On the other hand, if I were to "rebuild" an old violin, I think that the first thing I'd look at and want to work (to a specific degree) WITH, is what was already or originally there, and what IT pointed to.
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Last edited by ctviolin on Mon Jun 10, 2013 11:56 am; edited 7 times in total
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ctviolin
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PostPosted: Mon Jun 10, 2013 3:35 am    Post subject: Reply with quote

rabn wrote:


I'm still new to building and restoring violins, so what I am doing is checking my source with more experienced people.




Completely understandable.

On the other hand it sounded like you knew what you wanted to accomplish already - just didn't know how to go about it.

Which - I must admit -I have no idea how you would make the plate(s) change its (their) basic nature in order to accommodate modern ideas either.
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Chet Bishop
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PostPosted: Mon Jun 10, 2013 9:57 am    Post subject: Reply with quote

Craig;

I had the odd experience a few years ago of "re-building" a viola that had such incredibly thick plates that I was able to actually re-arch and re-graduate the plates in the process, and ended up with a pretty fair instrument. Doesn't always work out that way, of course, but in that particular case it did.

Obviously, it was simply not the same instrument when I was done...the only thing that remained original (and essentially unchanged) was the purfling.

The scroll had been fairly crudely machine-carved, so of course I re-carved it. The ribs were thick, so I thinned them. I think all I did to the linings was to scrape them smooth. New bass-bar of course...

The wood had seemed decent, so I figured I couldn't hurt it...I just considered it a "kit" and after scraping the original (very poor) varnish away, that is effectively what it became.

Chet
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rabn
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PostPosted: Mon Jun 10, 2013 11:04 am    Post subject: Reply with quote

That is the case here. The thickness of the top and back plates were, on average, 4.5 mm thick. So I desided to regraduate.
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ctviolin
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PostPosted: Mon Jun 10, 2013 11:13 am    Post subject: Reply with quote

Chet Bishop wrote:
Craig;



...the only thing that remained original (and essentially unchanged) was the purfling.

Chet





Ha ha ha!

Priceless!

I think this thread needed this experience - it just goes to show you what CAN happen - how far it CAN go!

ct
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Chet Bishop
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PostPosted: Mon Jun 10, 2013 12:51 pm    Post subject: Reply with quote

These plates were 6-8mm thick or so, in the middle...I really had a lot to work with. Chinese VSO, as I recall, but ended up a pretty nice viola.
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antonio
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Joined: 21 Sep 2008
Posts: 27
Location: Croatia

PostPosted: Tue Jun 11, 2013 4:44 am    Post subject: Reply with quote

Rabn, install the bass bar first. This will rise the frequency a lot. Then carve the bass bar to its final shape. You have to measure the frequency very often (during carving), and when you reach the desired frequency, that will be the final shape of your bass bar.
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rabn
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PostPosted: Tue Jun 11, 2013 2:50 pm    Post subject: Reply with quote

Thank you for the advice everyone. Off to the worksbop now. Cheers.
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