Sawmill Operation
Blade Height Scale
Sawmill Operation WMdoc120220 5-9
5
7. Loosen the clamps and remove the boards that have good clean edges on both sides.
Clamp the remaining flitches and repeat steps 2-5.
5.7 Blade Height Scale
See Figure 5-6.
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 carriage to an even measurement on the inch scale. Make a
trim cut. Return the carriage for the second cut and lower it 1 1/8" (29 mm) below the orig
-
inal measurement. (The extra 1/8" (3 mm) allows for saw kerf and shrinkage of the lum-
ber.)
IMPORTANT! 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
See Table 5-1. 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.
FIG. 5-6
Standard Quarter Scale
TABLE 5-1
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