Woodstock W1820 - Manual (Page 47)

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Because dado blades are so much wider than standard
blades, they place a much greater amount of force against
the workpiece when cutting.
To avoid injury, dado cuts require a much slower feed rate
than normal cuts, and they are best done with multiple
light cuts that get progressively deeper until the desired
depth of cut is achieved, as demonstrated in Figure 58.
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(% Adjust the dado blade to the desired depth of cut.
)% Adjust the distance between the fence and the
inside edge of the blade, as shown in =`^li\,. on
GX^\++.
— If dadoing across the workpiece, use the miter
gauge and carefully line up the desired cut
with the dado blade. DO NOT use the fence in
combination with the miter gauge.
*% Reconnect the saw to the power source.
+% Turn the saw FE. The blade should run smooth, with
no vibrations.
,% When the blade has reached full speed, perform a
test cut with a scrap piece of wood.
-% If the cut is satisfactory, repeat the cut with the
actual workpiece.
=`^li\,/% Example of dado being cut with
multiple light cuts, instead of one deep
cut.
Dado Blade
Workpiece
Fence
Cut 1
Workpiece
Fence
Cut 2
Workpiece
Fence
Cut 3
Finished
Dado Cut
Workpiece
Fence