BM 1619929E58
hammer. Too little pressure will keep the bit from cutting and cause excess friction by sliding over the surface. This can be damaging to the drill and bit.
Shanks of all drill bits should be wiped clean prior to using and immediately after removing.
RECALL THESE INSTRUCTIONS FOR
SAFE OPERATION:
1.Some materials require slow drilling speeds; whereas, others require higher speed to produce the best results.
2.All work must be supported or secured before drilling and steady, even pressure applied in line with the drill bit.
3.As the drill bit cuts through the opposite side, reduce the pressure and continue running the drill as the bit is withdrawn.
Materials such as glass, porcelain, ceramics, tiles, plastics, etc., should be drilled at low speeds with specially designed drill bits and lubricants.
DRILLING WOOD OR PLASTIC
If backing block is not used, ease up on the pressure just before the bit breaks through the
wood to avoid splintering. Complete the hole from the opposite side immediately after the point breaks through. If bit binds, reverse the drilling operation to help remove the bit from the work.
DRILLING METAL
Make a center punch in the material for easier starting. Use enough pressure to keep the bit cutting. If the bit is allowed to merely spin in the hole, it will become dull within a short time. When drilling a larger hole, it is faster and easier on your power pack to first make a smaller hole and enlarge it to the required 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.
DRILLING MASONRy
Use
