Table of Contents
Advertisement
adjusting drilling depth
Adjusting Drilling
Depth
The drilling depth is precisely adjusted by using
the depth control on top of the headstock column
(see Figure 21). The depth control window shows
the drilling depth in inches, with the last two digits
as decimals.
Adjusting Knob
Depth Control
Window
Current Depth
(in inches)
Figure 21. Boring bit depth control.
To adjust the drilling depth of the boring bits:
1.
Loosen the depth locking screw shown in
Figure 21.
2.
Use the adjusting knob to bring the depth
control to "0".
3.
Calculate the drilling depth by using the fol-
lowing formula:
A + B = Drilling Depth
A = The distance from the bottom of the bor-
ing bit to the workpiece.
B = The desired depth of the hole to be
drilled.
Model G0642 (Mfd. Since 11/14)
Note: Use the following case and Figure 22
for an example of calculating drilling depth.
In this example, the distance from the bot-
tom of the boring bit to the workpiece is 2
(A), and the depth of the desired hole in the
workpiece is
is 2
Calculation: 2
Depth
Locking
Screw
Workpiece
Table
Figure 22. Example of calculating drilling depth.
4.
Convert any fraction of the calculated drilling
depth to a 2-place decimal (
example is converted to 0.75").
5.
Set the depth control to the calculated drilling
depth and re-tighten the depth locking screw
to secure the setting.
Note: In the above example, the depth con-
trol would be set so that 2.75 would show in
the depth control window.
6.
Test the drilling depth setting on a scrap
piece of stock that is the same thickness as
your workpiece. Fine tune the depth control
setting until you are satisfied with the drilling
depth.
This line boring machine is designed to
drill only wood products. Drilling any other
material may damage the machine and will
void the warranty.
⁄
" (B). Thus, the drilling depth
1
2
⁄
".
3
4
⁄
" +
⁄
" = 2
⁄
1
1
3
4
2
4
A
B
NOTICE
⁄
"
1
4
"
A = 2
/
"
1
4
B =
/
"
1
2
⁄
" in the above
3
4
-23-
Advertisement
Table of Contents
