Drilling Tips - Challenge Handy-Drill Instructions And Parts Manual

8.0 Drilling Tips

8.0 Drilling Tips
Important! To prevent the drill from overheating, always avoid drilling too slowly. The drill should be
brought down as rapidly as possible allowing the drills to easily cut through the paper.
Plastic Bindings - Drilling holes for plastic bindings, instead of punching them, is practical and saves
a great deal of time, particularly on long run jobs.
Keep Drills Sharp - A dull drill is the major cause of drill breakage and production tie-ups. Usually
after 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.
Keep 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. On these jobs the coating on the chips frequently fuse the chips into one solid mass
when the drill cools, 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. Be sure to touch the cutting edge with the lubricant also. Wipe off excess oil
before drilling. CARE MUST ALWAYS BE TAKEN WHEN HANDLING 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 but 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 the spindle is badly worn or bent through maladjustment, have it replaced
immediately. A wobbly or loosely held drill will break.
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 let a drill drop onto the sharpening bit. It will
chip the sharpening edge. 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.
Just a little time and effort taken with each use of your paper-drilling machine should result in trouble
free operation over many years.
Parts Customers: The Challenge Machinery Company provides parts with the express
understanding that they are to replace parts found missing or no longer serviceable on equipment
designed and/or manufactured by Challenge. The Challenge Machinery Company assumes no
liability for any modification or alteration to any Challenge products, and The Challenge Machinery
Company does not authorize any such modification or alteration to any Challenge products. Any
modification or alteration of any Challenge product will void any remaining warranty.
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