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Problem
Cause
Remedy
3) Excessive
drilling pressure
required.
Incorrectly re-sharpened,
worn or chipped cutter
Re-sharpen or replace
Coming down on swarf
lying on surface of
work-piece
Clean work-piece.
Take care not to start a cut
on swarf
Gibs out of adjustment
or lack of lubrication
Lubricate gib and/or adjust
grub screws
Swarf accumulated
(packed) inside cutter
Clear cutter
Incorrect speed selection. Select appropriate speed.
4) Excessive cutter
breakage
Steel swarf or dirt under
cutter
Remove cutter, clean part
thoroughly and replace
Incorrectly re-sharpened
or worn cutter
Always have a new cutter on
hand to refer to for correct
tooth geometry, together with
instruction sheet
Cutter skipping
See causes and remedies (2)
Slide-ways need
adjustment
Tighten slide-way
Cutter not attached
tightly to arbor
Retighten
