Guadagnini Violin Shop

05/07/2026

These questions were all raised by musicians over the years while I was a guest speaker at Northwestern University Summer Violin Institute. I have organized them by different topics, hoping they are useful for musicians. This video’s topic is:

Hiding wolf notes by manipulating tailgut length
One can never fully eliminate the wolf notes, but they can be minimized; sometimes a wolf can be hidden between notes by manipulating tailgut length.

04/08/2026

These questions were all raised by musicians over the years while I was a guest speaker at Northwestern University Summer Violin Institute. I have organized them by different topics, hoping they are useful for musicians. This video’s topic is:

Why does too much soundpost adjustment harm instruments?

1) Although sound-post adjustment can be used to optimize the sound, including minimizing wolf notes, if it is not necessary, don’t do it. Doing sound-post adjustment too often is bad for instruments because spruce (the top) is very soft.
2) Sometimes sound can be made better without soundpost adjustment.
3) When one travels in the car, lay the case flat and upward on the seat, not on its side, to prevent soundpost movement.

1) Although sound-post adjustment can be used to optimize the sound, including minimizing wolf notes, if it is not necessary, don’t do it. Doing sound-post a...

03/24/2026

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03/21/2026

How to keep bridges lasting longer

Enjoy the videos and music you love, upload original content, and share it all with friends, family, and the world on YouTube.

03/13/2026

Featuring a fine Italian violin by Antonio Gragnani, Livorno, late 18th century, it comes with
certificate by William Moennig & son 1988
certificate by Jacques Francais 1995
certificate by Albert Moglie 1935

03/06/2026

Protect varnish by cleaning instruments properly

1) Some varnish recipes contain rosin, so if you don’t clean rosin often, they melt together with varnish, ruining the varnish. It is best to wipe instruments with a clean and very soft cloth without any cleaner & polish after each use. If someone really would like to use a cleaner, use it sparingly, as little as possible, since it contains sticky oil and chemicals.

2) Turn the instrument upside down while using cotton with little rubbing alcohol to clean the strings and the fingerboard so the rubbing alcohol will not drip onto the instrument.

3) Hold the instrument by its neck and endpin or chinrest, not on the body, so varnish will not fade away or be damaged in the long run.

1) Some varnish recipes contain rosin, so if you don’t clean rosin often, they melt together with varnish, ruining the varnish. It is best to wipe instrument...

02/21/2026

Restore an old French bow (Tourte school, circa 1800) for a client.

02/13/2026

02/05/2026

Clients' satisfaction inspires me to do what I do.
Feedback from a client whose J. B. Vuillaume I did varnish touch-up on: "Beautiful, masterful work."

01/29/2026

Featuring Douglas Cox's viola and violin. Cox's instruments have received awards from the Violin Society of America and are played by musicians around the world.

If you are interested in Cox' viola or violin, please contact us at (312) 588-1655