Tapping

Types

• There are taper, plug, and bottoming taps: - https://www.spaco.org/taptips.htm
• There are also combo drill-taps - see amazon - [1]

Examples

• 550 RPM to do a 5 mm hole:

Power Tapping - Tapping with a Drill Press

• Requires 2 flute tap to make it easiest, otherwise chips bind up
• Same hole and tap using same fixture with drill press - guarantees alignment
• The tap self-feeds the drill press downwards. This implies that this would not be doable so well with a hand-held drill. Mag drill would work.
• Not so! - at 10:28 the skilled man shows how to do it with a cordless drill! No tap handle needed.
• Lot of purists hate it
• Not a beginner's technique