Ricardo -> RE: Finger nail sticking during picado (Feb. 17 2022 17:25:11)
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Regarding your diagram above, the XZ red curve of the nail. Naturally it is a bit flat, and some people have a horrible almost exaggerated flat arc, or twisted or other wise distorted. If you imagine the red line string traveling that shape upward, the time it takes is minimal before release. However, if you put glue on your nails it more severally bends the sides, making the arc much taller along the Z axis. This is ideal, as then you have a very long travel time, ie, you are using the nail for the string to glide across. The y axis give us the tilt towards us of the top of the arc. The longer the nail is it is like setting the string lower on the arc, the shorter is like using only half the arc. Planting the finger is like pushing the flesh down so the string gets a better starting position closer to the bottom of the arc. Too much of a fleshy start and the string hops into the upper part of the arc and gets a thinner tone. So assuming we are good with the arc, the round or flat filing is along the y axis….meaning if the white material follows the contour of the nail bed, the pink part where the nail attaches to the finger, that means on the sides along the y axis, the bottoms of the two sides of the arc in other words, the white material is short or even disappears into the nail bed (ie the bottoms bend backward along the y axis). That is round nails. What needs to happen is the white material there needs to be allowed to grow out such that along the y Axis, the white material hanging off the finger is LONGER on the sides than in the center. That means, the bottom sides of the arc are closer to us along the y….even they can have right angles or 90 degrees along the ZY view (in reality it will be greater than 90, more like 100) if you turn the whole xyz sideways so X disappears at the vertex. I tried to show this angle in an earlier video where the string plant can never go below zero along the Z axis. You play up along the Z axis so planting requires the string to sit just above zero. If you have super long nails this can be a problem. You need the nail to be short enough so that the planting situation of pushing the flesh down along Z and along y to the right, bring the string down to a good spot deep enough down the Z but not so far down it falls below zero. Round nails curve off the inside corner of the ZY and give the false idea that there is no resistance…instead they experience the resistance of traveling around that curve vs just straight up the smooth glide of the Z. So in order to SEE the angle at which you file, you need to take the entire arc structure ZX facing you, and bend your finger along the X axis such that y starts moving upward and Z starts moving Toward you. At certain point the Red arc flattens and becomes the blue straight line. If you keep bending until Z disappears at the vertex, then you should see the top view of the nail and nail bed such that, as described earlier, the white parts are shorter along the y Axis IN THE MIDDLE than on the sides. That all depends on the way your nailbed grows, more curves will be shorter, less curved you might even see a contour of almost equal white parts above the nail bed. So back to the straight blue line…that is how the filing should be done. How much you tilted the y line up and Z toward you before it disappears will determine the length. Any ramping will be seen along the y axis relative to the X as well. In my case, because when I bend fingers ie play guitar, the y only goes straight upward on the m finger. Ring finger bends such that y moves upward like this direction \ and my index bends such that y axis moves this way /. The ramps therefore along the X axis will have those exact angle directions, but in terms of degrees or position along y, very shallow. M finger dead straight across X.
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