Twist Drills. Drills of Other kinds. Drill Sharpening. Drill Chucks. Screw Threads. Taps and Dies - General. Hand Taps. Tapping Drills. Screwing Dies. Tap and Die Sharpening. Drilling Forces. Dimensions of BA Tap Shanks. Tables.
Tubal Cain was the pen name of engineer and craftsman Tom Walshaw, the writer of many best-selling home workshop and model engineering guides.
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