Troubleshooting — Cutting Tools Outlet Guides — Page 2

Reamer chatter usually comes from instability, too much overhang, poor alignment or incorrect cutting conditions.

An oversize reamed hole can come from excessive allowance, runout, poor alignment, speed or a worn reamer.

Oversizing can result from excessive pressure, poor alignment, tool runout or a countersink selected for the wrong fastener.

Chatter comes from overhang, unstable workholding, excessive feed, a dull tool or an angle mismatch.

Arbor wear is often caused by runout, poor fit, side loading, chips in the interface or a worn pilot system.

Magnetic holding power depends on clean contact, adequate steel thickness, a flat base and a sound magnet system.

Slug retention can come from a bent pilot, insufficient ejection space, chips packed in the cut or cutter misalignment.

A dull cutter, incorrect shank, insufficient lubricant, poor magnet contact or wrong speed can stop an annular cutter from cutting efficiently.

Chip packing depends on hole type, tap geometry, material, depth and lubrication.

Slipping can be caused by the wrong shank, loose set screws, contamination or a worn arbor.

Stainless steel can work harden when the tool rubs, dwells or loses its edge.

Taps follow the drilled hole, so poor entry alignment or workholding creates a crooked thread.