Making animal glue for violins

I make traditional animal glues out of tendons and out of raw hide, and test them against a commercially made bone glue. The tendon glue will be used to build the Redwood Violin.
This is part of The Redwood Violin Project, designed to paint a picture of Sonoma County, California, as told through the story of making a violin, as far as possible, from locally sourced materials. I will be positing videos about collecting the materials, the people I meet, and about the process of making a violin, including things like making my own glue and varnish from scratch.
Materials for the violin are selected both for being workable substitutes for traditional materials, and with consideration for their significance to Sonoma County's history and economy.
For a lot more information about the project, visit the website:
theredwoodviolin.org/
I am a violin maker with almost 30 years of professional experience.
www.andrewcarruthers.com/

[@jamesrussell2601]

Interesting approach to a rub joint. I have been doing rub joints for years without failure, but you make a good case for three coats. I will give it a try. Thanks for the great video.

[@abbadon7265]

This was amazing to see. Thank you.

[@meistershandwerk]

Sehr interessantes Video. Ich arbeite schon seit Jahren mit Haut- und Knochenleim weil es nichts haltbarer es gibt. Außerdem ist der Leim reversibel. Man kann ihn im Falle von Reparaturen wieder gut lösen.

[@ChrisC811]

Always fascinating to see what you are doing. I have been doing rub joins for years and never had one fail, but I only apply the glue one time. I will give this method you are using a go just to try it out. Thanks for the great viseos.

[@merryprankstermatt]

This is super cool, thank you for sharing!

[@willieswanepoel9456]

I love what you do. Can you put up the volume please.

[@Wolfgang3418]

Fine videos! Please let the violin play now and then more often! Thank you

[@danschoenharl3856]

Since learning about this project from reading the article in Strings Magazine, I have enjoyed watching the videos to see the process unfold. Watching the glue tests I could see the joint of the tendon glue expand, and I thought for sure it would give, but it sure didn't. Watching in slow motion, it is possible to see how much the glue flexed (tendon like?).

[@fiddlefaddle1]

I really enjoyed this demonstration. I'm buying a violin soon and I had to decide between a violin that has a two piece back and another with a one piece back. I actually like the two piece back violin more but, am hesitant about the durability of a two piece back. I read somewhere that a two piece back is structurally more durable than a one piece. I would appreciate any input from an expert as yourself.

[@Davewutsup]

Can you do one made from horse hoof or other animal hoof?

[@obiessen]

what is the best sounding glue (organic),Yhank you for uploading