Drilling Metal - Ayce 1512 Traduction De La Notice Originale

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drill.
• Try running the drill in reverse to remove the bit.
• Keep the drill in line with the hole. Ideally, the drill bit should enter at right angles to
the work. If the angle is changed during drilling, this could cause the bit to snap off
blocking the hole and perhaps causing injury.
• Reduce pressure as the drill is about to break through the item being drilled.
• Don't force the drill, let it work at its own pace.
• Keep the drill bit sharp.
b. Drilling wood
• For maximum performance when drilling larger holes, use auger bits or spade bits
for wood drilling.
• Set the tool to the drill mode.
• Begin drilling at a very low speed to prevent the bit from slipping off the starting
point. Increase the speed as it bites into the wood.
• When drilling through holes, place a block of wood behind the work piece to prevent
ragged or splintered edges on the back of the hole.
c. Drilling metal
• For maximum performance, use HSS drill bits for metal drilling.
• Set the tool to the drill mode.
• Mark off the centre of the hole using a centre punch.
• Use a suitable lubricant for the material you are working on.
• Begin drilling at a very low speed to prevent the bit from slipping off the starting
point.
• Always clamp sheet metal. Support thin metal with a block of wood to avoid
distorting it.
• For maximum performance, use high quality carbide-tipped masonry drill bits when
drilling holes in brick, tile, concrete etc.
• Use the drilling setting initially then revert to the hammer action once the holes are
established.
• 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 holes in tile, practice on a scrap piece to determine the best speed and
pressure.
• NOTE: Reverse rotation during impact drilling may damage the drill and drill bit.
80 | 81 GB