By Richard Raffan
В книге подробно, с иллюстрациями рассказывается о технике и приемах создания деревянных изделий круглой, овальной, эллипсоидной формы. Это может быть кухонная утварь, различные шкатулки и прочие изящные вещицы, способные украсить наше жилище.
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Additional info for The art of turned bowls : designing bowls with a world-class turner
The distance between the growth rings has a big effect on the grain patterns within different forms. With widely spaced rings, there will be large areas of bland wood in the long-grain sections, particularly with small bowls; here, the scale is all wrong and tighter rings look much better. In quartersawn boards, left, the grain is perpendicular to the faces. These blanks will shrink in their width and thickness but not warp. In flatsawn boards, right, the grain is parellel to the faces. These blanks will cup away from the pith.
Subsequent cuts are parallel to the first. Where the pith is in the center, as in the photo below, I usually go for two quartersawn boards, top and lower left, which vary in thickness according to the radial splits from center. - (305mm) long log I thereby get two large blanks at least 10 in. by 3 in. (255mm × 75mm) and two boards that yield two small blanks each. A similar log can be From a log with the pith well off-center, especially if small, you can cut three thick flatsawn blanks, or one thin and one very thick.
If we can eliminate such flaws in our own creations, we are well on the way to making bowls (in this case) that will long survive us. Let’s start with two simple curves. The first, and most obvious, is an arc drawn with a compass. The trajectory of the curve is dictated by the radius of the circle of which it is the circumference. The second is the catenary curve formed by a flexible chain hanging between two points. No matter where the ends are in relation to one another, the curve is smooth and symmetrical.