Sawmill Operation
Blade Height Scale
Sawmill Operation
WMdoc041621
5-11
5
5.8 Blade Height Scale
See Figure 5-8.
THE INCH SCALE
The horizontal line on the blade height indicator shows how many inches the bottom of
the blade is above the bed of the mill. If you know the height of your blade at each cut,
you can determine the thickness of lumber you are sawing.
Example:
You want to cut 1" (25 mm) random width boards from a log. Position the blade
for the first cut. Move the mast to an even measurement on the inch scale. Make a trim
cut. Return the mast for the second cut and lower it 1 1/8" (29 mm) below the original
measurement. (The extra 1/8" (3 mm) allows for saw kerf and shrinkage of the lumber.)
NOTICE:
The yellow area on the scale identifies where the blade could
encounter a side support or log clamp. Check that these items are
below the blade level before sawing.
THE QUARTER SCALE
The magnetic quarter scale has four sets of marks. Each set represents a specific lumber
thickness. Saw kerf and shrinkage allowance are included, but actual board thickness will
vary slightly depending on blade thickness and tooth set.
See Table 5-1.
FIG. 5-8
Standard Quarter Scale
Scale
Actual Board Thickness
4/4
1" (25 mm)
TABLE 5-1
LX1501-21