Instruction manual
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This manual may not be copied or reproduced in any way without the express written consent of
MLCS Woodworking.
Copyright 2012. MLCS Woodworking. Page 16
Cutting Out Openings for Electrical Boxes:
DO NOT use excessive pressure and fast speed while cutting. The motor speed switch
should be set to operate on the lower of the two speeds when cutting drywall.
CAUTION! Do not attempt cutting around outlet boxes in drywall until:
1) You have either turned the breaker OFF or removed the fuses that interrupt all electricity
in the vicinity of the electric box.
2)
You have read the instructions and understand the correct procedure for cutting out an
opening in drywall.
Before installing drywall, push the electrical wires to the back of the box far as possible to
reduce the likelihood of the wires being cut by the bit when cutting the opening. Before
operation, mark the drywall sheet as close as possible to the center of the box opening. The mark
should be made on the side of the drywall that will be facing you. Adjust the depth of cut so the
bit will protrude at least 1/16”, but no more than 1/8" beyond the thickness of the drywall.
Properly fasten the drywall to the studded wall. With the heel of the base resting against the
drywall and the bit at an angle to the drywall, without touching it, turn the motor on and carefully
plunge the bit through the drywall at the mark indicating the center of the box. Tilt the base so
that it sits flush on the drywall. Move the bit slowly to the right until you feel the bit contacting
the inside of the box. Pull the bit out far enough to slip it over the edge of the electrical box.
Once the bit is outside the electrical box, push it back to full depth beside the outside edge of the
electrical box. Move the tool upward while applying slight pressure toward the center of the box.
When you feel the bit reach the top right hand corner of the box, move the tool to the left while
applying slight pressure downward toward the center of the box. Continue moving the tool
around the box in a counter clockwise direction while maintaining slight pressure toward the
center of the box. When the box cutout is complete, turn the tool OFF and remove it from the
cutout. The rotating cutting action of the bit will cause a slight pull to the left when cutting.
Natural variations in the structure of wood will cause the bit to wander. When cutting a hole in a
vertical surface, avoid ending the cut at the bottom of the hole. Always start and end the cut at
the top, so the cutout part will not drop onto the rotating bit. Always turn the tool OFF before
removing it from the work-piece.