Drill Bit Maintenance
Keep Drill Bits Sharp
Dull drill bits are the primary cause of drill breakage and production
tie-ups. After about two hours of drilling, depending on the type
of paper being processed, drill bits should be sharpened using
an approved Challenge sharpener. Using dull drill bits results
in poor work quality and will damage your drill due to the excessive
force placed on the drill and drill bits.
Keep Drill Bits Clean
Dirty and rusty drill bits will not permit the free upward passage
of chips. Pressure built up by drill chips may cause a clogged
bit to split or break. Keep the bit free from dirt or rust, clean
the drill of all chips after each use, and apply a lightweight
machine oil to the inside and outside of the bit. Drill bits should
be cleaned out immediately after each use. This is particularly
true if coated or varnished stocks are being drilled. On these
jobs, the coating on the chips frequently fuses into one solid
mass when the bit cools. This can cause breakage the next time
the drill is used. When not in use, drill bits should be stored
in a bath of lightweight machine oil to prevent corrosion.
Lubrication assists the passage of chips and helps prevent overheating.
Use readily-available lubricant sticks (#4688) for this purpose.
Hold the end of the stick against the side of the rotating drill
bit. Also, be sure to touch the cutting edge of the bit with the
lubricant stick. Lubricant must make its way inside the drill
bit for ease of chip passage, and on the outside for smooth clean
drilling. Wipe off excess oil before drilling. Care must always
be taken when handling or lubricating drill bits. Never allow
loose clothing, hair, or jewelry to come in contact with a spinning
Check 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 allow
a drill to drop onto the sharpening bit -- it will chip the carbide
tip. Use gentle pressure and allow the sharpening bit to do the
work. Check the sharpness of the drill after sharpening. The cutting
edge should be razor-sharp.
Keep the Spindle Clean
Clean out the drill spindle frequently. This will prevent buildup
in the spindle of the drill.
Set the Drill Correctly
Do not cut too deeply into the cutting block. The drill bit should
cleanly cut through your last sheet and just touch the block.
During drilling, do not reset the drill depth. Rather, change
the position of the block frequently. Drilling deeper into the
block dulls drill bits quickly. As an alternative to drilling
into the block, 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 due to incorrect adjustment,
have them replaced immediately. A wobbly or loosely-held bit could
To prevent the drill from overheating, always avoid drilling too
slowly. With constant and even pressure, drive the drill bit through
your stack of paper. Allow the drill to easily cut through the
paper. Remember you are using a drill, not a punch.
|Drilling Tools & Supplies
||Power Drill Sharpener
Hand Drill Sharpener/Chip Remover
||Drill Bit Remover
||Drill Bit Remover, "T" Handle
||Lubricant Stick (Box of 12)
||Drill Bits 2" (5/8" - 1/2")
||Drill Bits 2" (5/8" - 1/2") Teflon* Coated
||Drill Bits 2½" (1/4" - 1/2")
||Hollow Drill Bits 2½" (1/4" - 1/2") Teflon*
*Teflon coated drill bits require less lubrication and cleaning,
and work better with a wider range of stocks.