Tudella Adjustment between instrument and model tabs To get a tight connection between instrument and Tudella, usually used to cover the latter with successive layers of wire, teflon tape and even using two materials together. The fully tapered Tudella model is not very suitable to be lined with cork for two reasons: the first is its small diameter, and that forcing the cork that fits a small diameter, is usually crack and more if thickness Cork exceeds 1.5 m / m and the second factor relates to the slight difference in diameter between the shank and the flute that I made, because it has the housing for the poor Tudella 10 m / m in diameter, having an own Tudella maximum of 9.5 m / m. If the property is higher and reaches 12 or 14 m / m, with a Tudella forming cylindrical shape in that area (photo No 3), the application of cork is more efficient and whose dimensions are set out in Article of 19 February 2010 "A new experience" (click the item label "bell")
In the instant n ยบ 1 shows separately the portion of cork a film of 1.5 m / m thick, cut with a radius of curvature of 70 m / m and 57 m outside / m inside with a maximum amplitude of 36 m / m. At one end is lowered as the thickness of the bevel, then apply contact cement to Tudella and the cork itself, both on the inside as on the wane, after several minutes, the pieces adhere tightly rolling a thread on the whole to improve adherence of the parties. Finally, using a fine file or sandpaper metal attached to a wooden board (worth the nail files) removes excess cork to get a good fit. For easier installation on the pipe, should shape the cork with a slight taper and then apply a small amount of petroleum jelly to facilitate sliding.
Photos 4-5 correspond to a conical Tudella acquired in a trade sector and the 2-3 scale and a cylindrical Tudella the adjustment on the instrument.
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