Global Machinery Company 3G18VM Drilling metals, Drilling plastics and plastic coated chipboard

Drilling metals

•For maximum performance, use high speed steel bits for metal or steel drilling.

•Ensure that the torque adjustment / hammer selection collar (2) is in normal drilling mode.

•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.

•Use a punch to mark the centre of the hole.

•Use a suitable lubricant for the material you are working on.

Use:	for:
Oil	Steel
Turpentine or paraffin	Aluminium
Do not lubricate	Brass, copper or cast iron

Drilling plastics and plastic coated chipboard

•Use high speed drill bits

•See drilling wood below

Drilling masonry

•For maximum performance use carbide-tipped masonry impact bits when drilling holes in brick, tile, concrete etc.

•Turn the mode selector to hammer mode, then rotate the torque collar to the drill position.

•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.

Drilling wood

•For maximum performance, use high speed steel bits for wood drilling.

•Ensure that the mode selector is in 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 bites into the material.

•When drilling through holes, place a block of wood behind the work piece to prevent ragged or splintered edges on the back side of the hole.

•WARNING. Never attempt to lock the trigger switch in the on position, do not lock the trigger on jobs where your hammer drill may need to be stopped suddenly.

All drilling operations

•Mark off the centre of the hole using a centre punch or nail.

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