RIDGID R8411503 - Manual (Page 17)

17
OPERATION
WOOD DRILLING�
For maximum performance, use high speed steel bits for
wood drilling.�

Select normal drilling mode.�
 Begin drilling at a very low speed to prevent the bit from
slipping off the starting point. Increase the speed as the
drill bit bites into the material.�
 When drilling through holes, place a block of wood behind
the workpiece to prevent ragged or splintered edges on
the back side of the hole.�
METAL DRILLING�
For maximum performance, use high speed steel bits for
metal or steel drilling.

Select normal drilling mode.
 Begin drilling at a very low speed to prevent the bit from
slipping off the starting point.�
 Maintain a speed and pressure which allows cutting
without overheating the bit. Applying too much pressure
will:
• Overheat the drill;
• Wear the bearings;
• Bend or burn bits; and
• Produce off-center or irregular-shaped holes.�

When drilling large holes in metal, start with a small bit,
then finish with a larger bit. Also, lubricate the bit with oil
to improve drilling action and increase bit life.
MASONRY DRILLING
For maximum performance, use carbide-tipped masonry
impact bits when drilling holes in brick, tile, concrete, etc.

Turn hammer mode ring to the hammer drill icon to select
hammer mode.�
 Apply light pressure and medium speed for best results
in brick.�
 Apply additional pressure for hard materials such as
concrete.�
 When drilling holes in tile, practice on a scrap piece to
determine the best speed and pressure. Begin drilling at
a very low speed to prevent the bit from slipping off the
starting point.�