6
Always remember that the magnet’s holding power is directly related to the workpiece thickness and surface condi-
tion. Since magnetic attraction diminishes with thinner material or rough surfaces, mechanical clamping of drill unit to
workpiece should be used when cutting thin material (3/8” or less) or material with uneven surfaces.
Note: Always form a loose knot in the power cord close to the molded plug. This prevents cutting fl uid from
running down the cord and into the power receptacle. (Refer to the diagram within the Safety Instructions in this
manual)
1. Make sure workpiece and bottom of magnet are free of chips, oil, etc.
2. Secure unit to workpiece with safety chain.
3. Position drill by sliding it and gently feeding Arbor so that pilot point is touching center of hole to be drilled.
4. Turn magnet ON by pressing the magnet ON button.
5. Turn Feed Handle, raising the cutter until the pilot is above the work surface.
6. Open the cutting fl uid valve several full turns (Models HMD914 only)
7. Make certain that cutter is clear of workpiece and turn motor On by pressing the motor START button.
8. Feed the cutter slowly into workpiece. Only after cutting path is established to a depth of about
1/16” can full force be applied to feed handles.
9. Ease up on feed pressure as cutter starts breaking through.
10. At conclusion of cut, turn motor OFF by pressing motor STOP button. Turn feed handles to raise Arbor thereby
ejecting the slug if it hasn’t already fallen free.
11. Turn magnet OFF by pressing the magnet OFF button.
12.
Disconnect from power source.
13. If necessary, remove chips from cutter and magnet.,
preferably wearing leather work gloves and/or with pliers.
14. Disconnect safety chain and you are ready to move
unit to new drilling position.
Special Instructions for horizontal or Overhead Operation
1.
Always Use Safety Chain.
2. Use grease or animal-fat base solid lubricant applied liberally to cutter.
3. For horizontal use, apply cutting fl uid to external parts of cutter with plastic bottle or oiling can.
1. Loosen all Gib Screws (40237)
2. Feed the drill in and out a few times and then, with top of motor slide fl ush with top of housing, tighten the Gib Screws
until you feel them touch the Steel Gib (40225)
3. Feed the drill in and out again.
4. Adjust Gib screws so that there is uniform pressure from top to bottom. (Top of motor slide fl ush with top of
housing)
5. Turn each Gib Screw in about 1/8 to 1/4 turn, depending upon your preference.
6. Gibs should be tight enough so that slide moves in and out smoothly with no wobble or shaking. (looseness will
cause cutter breakage)
Operating Instructions
Arbor Adjustment
