laguna LT14 series, Руководство пользователя

Страница: 40 / 55

40
6. On certain exotic woods, the ends have been painted. This is done to control the drying.
The paint is very abrasive and will dull the blade if you cut through it. It is recommended
that you cut the painted ends off your wood.
Using a radius chart
Until you become well acquainted with your saw, it is best to use the contour (radius) chart
to determine which size blade to use for a specific application. Radius charts can be found
in many woodworking books, magazine articles, and on blade boxes. They differ slightly
from one another but are good as rough indicators of how tightly a curve can be cut with a
particular blade. Each saw blade and operator is different, so it is impossible to make a truly
accurate chart. A blade can cut continuously without backtracking any curve that has a
radius as much as or more than is shown on the chart. For example: a 3/16" blade will cut a
circle with a 5/16" radius or a 5/8" diameter. To test if a 3/16" blade would work for a
particular curve, place a dime (roughly 5/8") over the pattern. The 3/16" blade can cut a
curve bigger than the dime, but not smaller. You can use everyday items such as coins or a
pencil to determine which blade to use. A quarter is the size of the tightest cut that can be
made with a 1/4" blade. A dime is the size of the tightest curve that can be cut with a 3/16"
blade. A pencil eraser is the size of the tightest turn that you can make with a 1/8" blade.
After a while, you won't even need an object to size the possible curve of a blade because
you will have become familiar with this process. There are options to matching the blade to
the smallest curve pattern. If there is only one very tight cut, it may be best to use a turning
hole, a relief cut, successive passes, or to change the blade. If you have a lot of cutting to
do, you can use a wider blade for the bigger curves and then switch to a narrower blade for
the tighter curves. Changing the blades can often save cutting and finish time. The chart
above is only a rough guide and is
not to scale, but from the information you can construct
your own guide.