Daniel P.N

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About Daniel P.N

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    Sweden

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  1. Daniel P.N

    Cucumber!

    Beautiful pic Conor! Whas he talking about Mandelbrot? There is a whole thing about explaining nature design with Mandelbrot fractals (https://en.wikipedia.org/wiki/The_Fractal_Geometry_of_Nature) Its the first thing i think about every time a see a scroll, Mandelbrot fractals, its like scrolls made of scrolls that are made of scrolls:
  2. Daniel P.N

    The Universe Within

    Hes comments in the video makes me think it is important to note that space pictures colors are not real. "Hubble images are all false color – meaning they start out as black and white, and are then colored. Most often this is to highlight interesting features of the object in the image, as well as to make the data more meaningful. Sometimes colors are chosen to make them look as our eyes would see them, called “natural color,” but not always" Source: https://asd.gsfc.nasa.gov/blueshift/index.php/2016/09/13/hubble-false-color/ And if you really want to understand how they do it: http://hubble.stsci.edu/newscenter/press_resources/skytel200209028034.pdf
  3. Daniel P.N

    Cooking rosinates

    Had no problems with the rosinates from recipes 41/42/43 (standard ones, not with calcium) into oil. Dried into powder, cooked (fused?), them cooked into oil. The final color was disapointing so never used them.
  4. Daniel P.N

    red flames

    @DoorMouse this is a post from 2016, i think it was my second or third instrument, very plain wood, clear oil varnish, and just a bit of sun tanning with some sodium nitrite. And I wondered why i had no flames at all
  5. Daniel P.N

    Casein glue and ground

    I had this problem too, and in my case it was my lime that was crap, not the casein. Worked very well with ammonia instead. And yes, there is a whole book about Casein, full of recipes! Casein; its preparation and technical utilisation: https://archive.org/details/caseinitsprepara00scherich This video is the most informative i have found about the process, it not only shows how to make casein, but how to purify it:
  6. Daniel P.N

    Cooking Colophony Down For Color, Low and Slow?

    I was searching around trying to understand what is going on during the cooking of rosin, i would like to find out if the color change is from concentration or some reaction, and i found this article: http://pubs.acs.org/doi/pdf/10.1021/ie50532a048 Unfortunately it does require some kind of membership to read, maybe someone here have access to it? The available part says some interesting things:
  7. Daniel P.N

    I want to see your work.

    Number 4 suffered my first glazing attempt today
  8. Nice recent article at Strings Magazine by Andrew Dipper: http://stringsmagazine.com/a-look-at-parisian-violin-makers-approach-to-varnish/
  9. Daniel P.N

    Does anyone know any good acoustics journal?

    Was it, by any chance, "HARDIN, Burton Ervin, 1936- . A COMPARISON OF TWO METHODS OF ARRIVING AT THE MOST SUITABLE THICKNESSES OF VIOLIN PLATES." ? I may have attached it by accident. two methods of arriving thicknesses of violin plates.pdf
  10. Daniel P.N

    Does anyone know any good acoustics journal?

    http://www.savartjournal.org/ "The Savart Journal is a multidisciplinary open access online micro journal featuring peer reviewed research articles and research notes on all aspects of the science and technology of stringed musical instruments, bowed and plucked"
  11. Daniel P.N

    Determining Arch height based on wood properties

    Don, just to make sure i understood correctly what you said, you mean that body modes are important to sound quality but are not related to free plate modes, right? Or that body modes and free plate modes are both, and their possible relation, not important? Non native english speaker here
  12. Daniel P.N

    Davide Sora's new videos on scroll and peg box carving

    I am always impressed by how sharp Davide Sora's tools look, maybe this was the most important lesson i learned from him, i guess that is where all the 'easy going' feel comes from when watching him work, and the great results too. If you could talk a litle about your sharpening routine it would be great! And i never lose an oportunite to say thank you for those videos, Thank You!!!
  13. Daniel P.N

    Recommended Gouges Sweep and Size [Width]

    Those are the ones i noted from Davide Sora's videos : n°3 x 4.7mm n°4 x 23 mm n°5 x 23mm n°6 x 6.3mm n°6 x 10.5mm n°6 x 13.7mm n°6 x 18mm n°7 x 11mm n°8 x 9.2mm big ones for rough carving: n° 3 x 34mm n° 6 x 34mm But you certainly dont need all of them to start. I started with Narex gouges and dont recommend them. I buy from http://www.ashleyilestoolstore.co.uk/ now, very good quality and price.
  14. Daniel P.N

    Video of the 2014 VSA Convention and Competition

    thank you! very interesting.
  15. Daniel P.N

    red flames

    Thanks Ben, i dont have tripoli right now, but i will see if i can get it before i finish my next violin.