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Splitting Port
Identifying Correctly Split Drill Bits
(And What to Do With Those That Aren't!)
Split Line
Undersplit
Split lines do not meet
in the center but
Chisel Edge remains.
Not enough material
has been removed
from the Heel of
the drill bit.
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4. Split the point
Press Chuck slowly and firmly into
the Splitting Port. Remove the chuck,
rotate one-half turn, and repeat.
Check the tip of the bit carefully to
determine that both sides of the
bit are split equally. Compare it to
this illustration. If it does not match,
study the information below.
Correctly Split
Split lines are nearly straight across.
Solution
More grinding is needed for larger
drill bits. If one side of the bit is
under split, insert the Chuck into the
Splitting Port again and split both
sides. Repeat until the split sides are
equal and look like the correctly split
bit shown above.
19
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