Plant your poinsettia in an area that receives full sun most of the day. However, keep in mind that to put out flower buds, poinsettias require 14 hours of complete darkness each day for 6 to 8 weeks before flowering. Any interruption to this dark period can delay or prevent the plant from flowering. Watering & Soil. Keep the soil moderately moist at all times. Poinsettias grow best in moist, well drained, fertile soils. As long as the soil is well drained, they will grow satisfactorily in a wide range of soils, including sand, muck, marl and clay.
Conical taper is the change in the diameter of a circular solid along its length. It can be expressed in linear units such as inches per foot or as an angle. When the decrease in diameter and the length are viewed as two sides of a right triangle, trigonometry can be used to convert the linear unit expression to an angle.
With a conical sanding disk, you can feed a long board through the machine, just like you would with a table saw. With an ordinary sanding disk, this would be impossible because the edge of the board would hit the edge of the disk. Note that you can use the fence, feather boards, and dust collector with the conical disk. By using the fence, not only can you square up the edges, but you can also sand a board to a precise width.