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Wood drilling
• To make holes of 1/4" or less it is recommended to use
high speed bits. To make holes larger than 1/4", it is
recommended to use spade bits for wood.
• Turn impact-rotation selector to drill mode (
towards the chuck).
CAUTION
• Secure the workpiece to prevent it from
turning when drilling.
• 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 the holes, place a black of wood
behind the workpiece to prevent ragged or splintered
edges on the back side of the hole.
• Release the trigger when the hammer drill may need to
be stopped suddenly.
Metal drilling
• Use high speed steel bits for metal or steel drilling.
• Turn impact-rotation selector to drill mode (
towards the chuck).
• Use a center punch to mark the hole location on the
workpiece.
• Begin drilling at a very low speed to prevent the bit from
slipping off the starting point.
• Maintain speed and pressure which allows cutting without
overheating the bit.
CAUTION
Applying too much pressure or faster speed
will: overheat the hammer drill, wear the bearings, bend or
burn bits and produce off-center or irregular shaped holes
• When drilling large holes in metal, it is recommended to
drill with a small bit at first, then finish with a larger bit.
• Lubricate the bit with oil to improve drilling action and
increase bit life.
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ENGLISH
Start up
Masonry drilling
• Use tungsten carbide-tipped masonry act bit when
drilling holes in brick, tile, concrete,etc.
• Turn impact-rotation selector to hammer mode (
pointing
pointing towards the chuck).
• Apply light pressure and medium speed for best results
in brick.
• Apply additional pressure and high speed for hard
materials such as concrete.
• When drilling in tile, practice on a scrap piece to
determine the best speed and pressure.
pointing
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