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Model G0779 (Mfd. Since 09/14)
Using Spindle
Downfeed Controls
The depth stop limits the drilling depth or down-
ward movement of the cutting tool. Maximum
depth is 5". This is useful when performing the
same operation multiple times.
To set depth stop:
1. DISCONNECT MACHINE FROM POWER!
2. Install tooling (refer to Page 23), then make
sure spindle is drawn all the way up into
headstock.
3. Loosen hex nuts that lock headstock, and
lower headstock (see Raising/Lowering
Headstock on Page 21) until tooling is
approximately
1
⁄8" above workpiece, then
retighten hex nuts.
4. Rotate depth stop adjustment knob until top
of depth stop pointer is level with desired
depth as listed on scale (see Figure 21).
Note: The depth stop scale functions as
a general guide only. It is not intended for
low-tolerance, precision results. To calibrate
the depth stop see Calibrating Depth Stop
on Page 36.
Setting Depth Stop
Fine Downfeed
Handwheel
Downfeed
Selector
Knob
Coarse
Downfeed
Levers
Handwheel
Dial
Quill
Lock
Lever
Figure 20. Downfeed controls.
Figure 21. Location of depth stop controls.
This machine has coarse downfeed levers and a
fine downfeed handwheel.
To operate the downfeed levers, simply pull for-
ward and down on the lever nearest you. The
spindle will go down as far as it can until you stop
pulling or until it hits the depth stop, then it will
automatically return to the top when you release
pressure on the handle.
Note: Do not let go of the handle until the spindle
returns to the top position or the spindle will slam
upward into the quill.
Use the fine downfeed handwheel to control
the spindle travel up or down in slow, small
amounts. If necessary, you can lock the quill/
spindle in a lower position with the quill lock lever
(see Figure 20).
To operate fine downfeed handwheel:
1. Tighten downfeed selector knob, shown
in Figure 20. This transfers control from
downfeed levers to fine downfeed handwheel.
2. Loosen thumb screw on rim surface of
handwheel dial, turn dial until "0" lines up
with index line, then retighten thumb screw.
3. Rotate handwheel to move quill/spindle up or
down. Each complete revolution equals 0.1".
Depth Stop
Adjustment Knob
Depth Stop
Pointer