Metal Drilling; Masonry Drilling - Craftsman NEXTEC 320.30565 Operator's Manual

METAL DRILLING
For maximum performance, use high speed steel bits for metal or steel drilling.
1. When drilling metals, use light oil on the drill bit to keep it from overheating.
The oil will prolong the life of the bit and increase the drilling action.
2. Begin drilling at a very low speed to prevent the bit from slipping off the
starting point.
3. Maintain a speed and a pressure which allow cutting without overheating
the bit. Applying too much pressure will:
• Overheat the drill/driver
• Wear the bearings
• Bend or burn bits
• Produce off-center or irregularly shaped holes
MASONRY DRILLING
For maximum performance, use carbide-tipped masonry bits when drilling holes
in brick, tile, concrete, etc.
1. Maintain a speed and a pressure which allow cutting without overheating
the bit or Drill. Applying too much pressure will:
• Overheat the drill/driver
• Wear the bearings
• Bend or burn bits
• Produce off-center or irregular-shaped holes
2. Apply light pressure and medium speed for best results in brick.
3. Apply additional pressure for hard materials such as concrete.
4. When drilling holes in tile, practice on a scrap piece to determine the best
speed and pressure.
5. Begin drilling at a very low speed to prevent the bit from slipping off the
starting point.
WARNING: Always wear safety goggles or safety glasses with side shields
during power tool operation or when blowing dust. If operation is dusty, also
wear a dust mask.
A_, WARNING: To ensure safety and reliability, all repairs should be performed
by a qualified service technician.
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