size. Lubricate the tip of the bit occasionally with CUTTING OIL for easier metal drilling. If bit binds, reverse the drilling to help remove the bit from the work.
It is not recommended to drill holes larger than 3/8" diameter through soft steel thicker than 1/8". Drilling through metal rapidly drains energy from your power pack.
DRILLING MASONRY
Use
need more pressure to prevent the drill bit from spinning.
It is not recommended to drill holes larger than 3/8" diameter in masonry material. Doing so rapidly drains energy from the battery pack.
FASTENING WITH SCREWS
This procedure shown in (Fig. 5) will enable you to fasten materials together with your Cordless Drill/Screwdriver without stripping, splitting or separating the material.
First, clamp the pieces together and drill the first hole 2/3 the diameter of the screw. If the material is soft, drill only 2/3 the proper length. If it is hard, drill the entire length.
Second, unclamp the pieces and drill the second hole the same diameter as the screw shank in the first or top piece of wood.
Third, if flat head screw is used, countersink the hole to make the screw flush with the surface. Then, simply apply even pressure when driving the screw. The screw shank clearance hole in the first piece allows the screw head to pull the pieces tightly together.
FASTENING
WITH SCREWS
1.Drill 2/3 diameter and 2/3 of screw length for soft materials, full length for hard materials.
Screw
Apply a slight even pressure when driving screws.
2.Drill same dia- meter as screw shank.
3.Countersink same diameter as screw head.
Adjustable
Screw
Drill
The adjustable screw drill accessory will do | FIG. 5 |
all of these operations quickly and easily. |
|
Screw drills are available for screw sizes No. |
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6, 8, 10 and 12. |
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