User Manual

11
OPERATION-GENERAL (Annular cutters
& twist drills only)
WARNING: Always ensure that the magnet is
adhered properly to the work piece before
beginning drilling.
NOTE: If mounting to a curved surface beam,
mount the machine parallel to the curve in the
work piece.
WARNING: Avoid operating at more than a 90
degrees from horizontal. When drilling at such
an angle take precautions to prevent cutting
coolant from entering the motor. Paste-type
coolant should be used.
1. First fit tool into arbor and line up with
intended center of cut. Then switch magnet
on.
2. Press green motor on button to start motor.
Use the crank handle to feed to work. Always
use very light pressure when beginning the
cut and just as the tool is breaking through.
The crank handle offers tremendous leverage,
so do not use too much force. Allow the
cutting tool to determine the pace. With
experience, the operator will be able to
determine the best pace to feed the tool to
the work. There should be some degree of
audible slowing of the motor but not bogging
in the cut. Correct cutting speed with a
properly sharp annular cutter will produce
long unbroken chips which produce a “bird’s
nest” shaped bundle of chips around the cut.
NOTE: Always ensure that the cutting tool is
sharp. A dull cutter typically will have finer and/
or choppy shavings.
WARNING: ALWAYS clear chips when there is too
much build-up. Excessive chip build-up could
result in a jammed cutter or other hazardous
situations.
WARNING: The slug ejected at end of cut is very
hot. Always provide a method of catching the
slug, as the ejected slug may cause injury to
people below.
NOTE: Lock the slide lock on the side of the
machine in the fully raised position when at rest
to prevent the slide from accidentally slamming
down. Remember to unlock it again before
commencing drilling.
CAUTION: Never attempt to cut half-circles or to
stitch drill (drill overlapping holes) with a TCT
cutter. This may destroy the cutter.
CAUTION: Never attempt to reenter a half-
finished cut if the magnet has been turned off
and the machine has been shifted in the interim.
This may destroy the cutter.
MAINTENANCE
Every 50 hours of operation blow compressed air
through the motor while running at no load to clean
out accumulated dust. (If operating in especially
dusty conditions, perform this operation more
Magnetic switch
Motor switch