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Device to fit bridges


Carl Stross

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:)

The second comment below the video identifies the critical issues well:

Bridges should be cut by hand with a knife... please don't do it this way... If you need more info., please contact me directly. Doing this way will 'damage the Varnish' at the bridge area plus where the wheel touches.
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I had the only copy of instructions for bridge fitting using only an axe and water wheel (unfortunately, it was handwritten into an old Cremonese bible that was since destroyed in a fire).  I've spent years becoming a master with this technique which is the secret of the Old Masters tone.  You want to use a machine?  Where's your pride?

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1 hour ago, Dr. Mark said:

I had the only copy of instructions for bridge fitting using only an axe and water wheel (unfortunately, it was handwritten into an old Cremonese bible that was since destroyed in a fire).  I've spent years becoming a master with this technique which is the secret of the Old Masters tone.  You want to use a machine?  Where's your pride?

Peter Goodfellow somehow gained access to that man(ly)uscript, but unfortunately, some pages were missing. ;)

https://www.youtube.com/watch?v=X2n1W5THyGQ&t=1s

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1 hour ago, David Burgess said:

These were my satires on fitting bridges this way:

https://www.youtube.com/watch?v=v1XXuo3hv6U

and

https://www.youtube.com/watch?v=ijfo8MpbAus

I put a comment below the Mr. "shahnazi violins" video, with links to your awesome video tutorials, hopefully he doesn't take them seriously:lol:

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3 hours ago, Davide Sora said:

:)

The second comment below the video identifies the critical issues well:

Bridges should be cut by hand with a knife... please don't do it this way... If you need more info., please contact me directly. Doing this way will 'damage the Varnish' at the bridge area plus where the wheel touches.

 

2 hours ago, Andreas Preuss said:

:blink: 

If the guy had Rene Morel standing in his back he’d be stabbed (at least verbally)

might work on brand new cheap instruments well enough. 
 

David Burgess posted some ‘more genius’ methods quite a while ago. 
 

 

I understand there is risk to the varnish, though it could be easily mitigated. For cheap instruments ( schools / rentals ) it's a quick method with what appears to be excellent results. I am not "advocating" it - I am simply presenting it. Cutting the feet with a knife might be the superior and correct method provided one has the skill. With insufficient skill it is surely worse than sandpaper.  

And by the way, some TOP ( and lesser...) makers use rotary sanders for the sound post. Nobody's perfect....

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1 hour ago, Carl Stross said:

 

I understand there is risk to the varnish, though it could be easily mitigated. For cheap instruments ( schools / rentals ) it's a quick method with what appears to be excellent results. I am not "advocating" it - I am simply presenting it. Cutting the feet with a knife might be the superior and correct method provided one has the skill. With insufficient skill it is surely worse than sandpaper.  

And by the way, some TOP ( and lesser...) makers use rotary sanders for the sound post. Nobody's perfect....

One artist I worked for in my youth suggested: Try not to stare at bad art... better it doesn't get in your head and become acceptable.

I think the same goes for bad technique.

I understand the need for haste with mass rentals, but I think i'll just not look. I'll feel better.

1 hour ago, Carl Stross said:

Seen you ever Morel fitting a bridge ?

I believe Andreas (as well as two or three others who post here) worked in the shop with Rene, so I'd assume the answer was "yes".

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12 minutes ago, Jeffrey Holmes said:

One artist I worked for in my youth suggested: Try not to stare at bad art... better it doesn't get in your head and become acceptable.

I think the same goes for bad technique.

I understand the need for haste with mass rentals, but I think i'll just not look. I'll feel better.

Well, how does one know what's "bad art" ? Is it just a feeling ? We've had a couple of opinion reversals.

As I said, I understand this may not be the right way. For cheap rentals/school instruments might be better than nothing as the work often needs be done by somebody unqualified and ... for free. On the other hand it would be nice if yourself or somebody else with superior expertise would explain in detail how to do it RIGHT. I looked all over MN ( have it ALL d/loaded ) and could find no such explanation. Bits and pieces, yes. Finer details, no.

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Just now, duane88 said:

Carl, If you use this device to fit student bridges you'll never learn to do it with a knife. If you do lots of student bridges with a knife, the skills come quickly, painfully, but quickly, provided you know how to correctly sharpen a bridge knife.

 

I'm just a tinkerer. For my very limited needs I use a Dremel and a small rasp as my hands are not stable enough to use a knife.  Otherwise, I am sure you are absolutely right. I think we should be open minded and not overly dismissive of different approaches.  Often, excellent results can be achieved through quite different methods.

And by the way, it would be nice if somebody will explain how to correctly sharpen a bridge knife. I'm sure I have seen something related on MN but can't find it at the moment.

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53 minutes ago, Carl Stross said:

I'd rather bet on the answer being "no".

Whatever Carl.  I'm sure Andreas can answer for himself. I have seen a number of bridges bearing Rene's own brand stamp, so I'm pretty sure he knew how to do it pretty well... and your inquiry to Andreas has little of merit in when discussing the virtue of a sandpaper method.

 

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5 hours ago, Carl Stross said:

Excellent method for fitting bridges quickly and accurately :

https://www.youtube.com/watch?v=RgYezf7AkBE

https://idioms.thefreedictionary.com/gag+me+with+a+spoon  :P

IMHO, sanding the feet, even with a jig, never gets them completely fitted, so they won't sit as solidly as cut feet. 

I was introduced to this abominable practice, and the icky little appliance associated with it, by the music-store owner (and primarily an electric guitar maker) that I first absorbed any violin luthiery from.  He also sold me a manual full of similar barbarisms, which I haven't seen in years (hopefully, it's lost for good).  I have totally cut my bridges for over a decade now.  ^_^

For those who have one of the scooty-things cluttering up their tool box, it can be used as a vise for holding bridges while you cut on them.  It also has some uses in holding tools, while you sharpen them.  Waste not, want not.  :)

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Just now, Jeffrey Holmes said:

Whatever Carl.  I'm sure Andreas can answer for himself. I have seen a number of bridges bearing Rene's own brand stamp, so I'm pretty sure he knew how to do it pretty well... and your inquiry to Andreas has little of merit to add to the discussion of the virtue of a sandpaper method.

 

I've no doubt he knew how to do it pretty well - he was a famous restorer/adjuster .

Andreas mentioned Morel am curious if he was doing anything special, anything ( even slightly !) different, worth imitating.

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4 minutes ago, Violadamore said:

https://idioms.thefreedictionary.com/gag+me+with+a+spoon  :P

I was introduced to this abominable practice, and the icky little appliance associated with it, by the music-store owner (and primarily an electric guitar maker) that I first absorbed any violin luthiery from.  He also sold me a manual full of similar barbarisms, which I haven't seen in years (hopefully, it's lost for good).  I have totally cut my bridges for over a decade now.  ^_^

For those who have one of the scooty-things cluttering up their tool box, it can be used as a vise for holding bridges while you cut on them.  It also has some uses in holding tools, while you sharpen them.  Waste not, want not.  :)

Indeed, I too discovered it is used quite a bit. Here I found a video with the ( hopefully ) accepted procedure :

https://www.youtube.com/watch?v=QQiuKpLZEF4

I am not arguing the superiority of the "accepted" procedure. I'm simply saying that the "scooty-thing" might be useful in certain situations.

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