Powermatic 2800 - Manual (Page 15)

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Repeat step 5, if necessary, until the light
and marking are aligned.
6. Adjust the other laser in the same manner.
Two parallel laser markings should look like
O and P in Figure 22 – the distance
between the lines will vary with board
thickness; however, the lines must be
parallel.
Cross Hair Alignment
7. Place board (R) flat on the table. Do not
allow the board to move from this position;
use clamps if needed. Bring the bit down
until it leaves a slight perforation in the
board; then raise it back up.
8. Loosen one laser setscrew (F, Fig. 21) and
adjust (G, Fig. 21) so the laser line crosses
the perforation (S). Tighten setscrew (F).
9. Adjust the other laser assembly in the same
manner until the laser lines form cross
hairs (S) exactly over the perforation in the
board.
10. Tighten setscrew (F, Fig . 21). Re-check the
vertical alignment to insure that the laser
lines did not shift during the tightening
process.
The laser is now calibrated properly and the
location of your holes can be centered at the
cross hairs for accurate drilling.
11. Assemble guards with pan head screws
over the laser on each side.
Operation
Installing the Bit
Insert the bit (not provided) into the chuck jaws
with about 1” insertion. When using a small bit,
do not insert it so far that the jaws touch the
flutes of the bit. Make sure the bit is centered in
the chuck before tightening the chuck. The
chuck is a keyless model; simply rotate it by
hand to tighten the bit.
Positioning the Workpiece
Whenever possible, use
clamps or work hold-downs to secure the
workpiece to the table.
Always secure the workpiece to prevent it being
torn from the operator’s hand. Using the column
as a work stop is not recommended; instead,
use holding devices such as clamps. When
using the table in tilted position, make sure the
table is securely tightened and the workpiece is
clamped sufficiently.
Figure 23
For clean, splinter-free holes, place a piece of
scrap wood on the table below the workpiece.
Perform operations with a minimum extension of
the quill. Adjust table position rather than using
excessive quill travel.
Feed the bit into the material with only enough
force to allow the bit to work. Feeding too slowly
may cause burning of the workpiece. Feeding
too quickly may cause the motor to stop and/or
the bit to break.
General Inspection
Before each operation of your Model 2800 drill
press, make a habit of checking that all locking
handles, set screws, bolts, etc., are tight on the
table and head. Confirm that the drill bit is
securely inserted inside the jaws.
Clear all items, such as tools and rags, away
from the machine.
Before attempting regular work, get the feel of
the drill press by practicing on scrap material.
For best results, always use sharp bits and
proper feed rates.
Setting Rotation Speed
There are several factors which determine the
best speed to use in any drill press operation,
such as kind of material being worked, size of
hole, type of drill, and quality of cut desired.
A general rule of thumb is, the smaller the drill,
the greater the required RPMs. And the speed
should be faster for soft materials and slower for
harder materials.