Hollow Drill Bit Care

Keep Drills Sharp – A dull drill is the major cause of drill breakage and production tie-ups. Normally, after only three hours of drilling (depending on the type of paper being processed) the drill should be sharpened. A dull drill results in poor quality work, and the need to buy new bits more often.

Paper Brill BitsKeep Drills Clean – A dirty and rusty drill will not permit the free upward passage of the drill chips. Pressure built up by a clogged drill will split or break the drill. To keep it free from dirt or rust, clean the drill of all chips after each use and apply light oil to the inside and outside. Drills should be cleaned out immediately after each use. This is particularly true if a coated or varnished stock has been drilled. When drilling laminates or plastics you should drill a few lifts of plain paper before shutting down machine, this will clear out the plastic before the bit cools down. On these jobs the coating on the chips frequently fuse the chips into one solid mass when the drill cools, making it hard to clean or causing breakage the next time the drill is used

Lubricate Drills – Lubrication assists in the passage of the chips and helps avoid overheating of the drills. Use readily available stick lubricants for this purpose. Hold the end of the stick against the side of the rotating drill. CARE MUST ALWAYS BE TAKEN WHEN HANDLING OR LUBRICATING DRILLS.

Keep Spindle Clean – Clean out the drill spindle frequently. This will prevent any buildup in the spindle of the drill.

Set the Drills Correctly – Do not cut too deeply into the cutting block. The drill should just touch the block and cleanly cut through the bottom sheet. During drilling, do not set the drill deeper into the block instead change the position of the block frequently. Drilling deeper into the block dulls the drills quickly. Use a piece of chipboard underneath your stock. This will make handling the stock easier and will ensure that the last sheet is cut cleanly through.

Check for Drill Wobble – If spindles are badly worn or bent through mis-adjustment, have them replaced immediately. A wobbly or loosely held drill will break.

Chipped BitCheck Your Drill Sharpener – The cutting edge of the sharpening bit should be inspected frequently to make certain that it is sharp and free of nicks. Never let a drill drop onto the sharpening bit. It will chip the sharpening edge (see photo). Use gentle pressure when sharpening – let the sharpening bit do the work. Check the sharpness of the drill after sharpening. The cutting edge should be razor sharp.



WarningRefer to the OEMs owners manual, for the safe operation of your equipment. To prevent the drill from overheating, always avoid drilling too slowly. The SHARP drill bit should be passed though the paper as rapidly as possible while also allowing the drills to easily cut through the paper. Care should be taken when handling hollow paper drill bits, they can be very sharp and dangerous. Avoid touching sharp edges.

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