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(13) Drill leads off:
(a) No drill spot. – Center punch or center drill work-piece.
(b) Cutting lips on drill off center. – Regrind drill.
(c) Quill loose in head. – Tighten quill.
(d) Bearing play. – Check bearings and reseat or replace if necessary.
(14) Excessive drill run-out or wobble:
(a) Bent drill. – Replace drill. Do not attempt to straighten.
(b) Bearing play. – Replace or reseat bearings.
(c) Drill not seated properly in chucks. – Loosen, reseat and tighten chuck.
(15) Work or fixture comes loose or spins:
Failure to clamp work-piece or work holding device to table. – Clamp work-piece or work
holding device to table surface.
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