Drilling an unmeasured blind hole (not all the way
through the workpiece) to a given depth can be done
two ways: using the depth scale method or workpiece
method.
Depth scale method (Fig. 26)
1.
Make sure the 0 (" or mm) mark on the depth
gauge rests at the top edge of the metal
support (3) when the quill is fully retracted.
2.
Put the workpiece on the table, and raise the
table until the tip of the drill bit just touches the
top of the workpiece. Lock the table in place.
3.
Determine the drill depth for this workpiece.
4.
Rotate the lower depth knob (2) until it is aligned
with the desired depth mark (4) (for example, 1")
on the gauge scale.
5.
Rotate the upper depth lock knob (1) until it
meets the lower depth knob (2). The chuck will
be stopped at the distance selected on the
depth scale.
Workpiece method (Fig. 26 and 27)
1.
Mark the desired depth (5) of the drill hole on the
side of the workpiece.
2.
With the bench drill press in the OFF position,
bring the drill bit (6) down until the tip is even
with the mark.
3.
Holding the feed handles at this position, rotate
the lower depth knob (2) until it meets the metal
support.
4.
Rotate the upper (1) depth scale lock knob until it
meets the lower knob (2). The chuck and the drill
bit will now be stopped at the distance selected
on the depth scale.
VII. Operation ... continued
21
Fig. 26
Fig. 27
2
4
1
3
6
5
