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Taps and Dies Cut on the Lathe, with Wrench and Stock

Omegatron · CC BY-SA 3.0

작성자

Martin

14. 10월 2026

Taps and Dies Cut on the Lathe, with Wrench and Stock

A tap cuts the thread inside a hole; a die cuts it on a rod. Makers made their own in the 16th and 17th centuries. Cut the thread on tool steel in the screw-cutting lathe, file flutes so it cuts, harden it, and use the finished tap to cut the thread in a steel blank that becomes the matching die. A T-wrench turns the tap, a stock holds the die. The picture: a tap held in a T-wrench.

고급

Two days for a few sizes

안내

Turn and thread the tap

Turn tool steel to the thread's major diameter with a square on the end for the wrench. Cut the thread in the lathe at the right pitch and check it with the gauge. Taper the first 8–10 threads for a taper tap, or 3–5 for a plug tap.

이 단계의 재료:

공구강 팔각봉1 개

절삭유0.05 리터

필요한 도구:

금속 선반

고속도강 목선반 공구 세트

나사 게이지

디지털 캘리퍼스 6인치

Flute and harden the tap

File three or four lengthwise flutes along the thread so it has cutting edges and room for chips. Harden in water from cherry red and temper to brown.

이 단계의 재료:

물10 리터

숯1 as required

필요한 도구:

금속용 줄

바이스(만력)

대장간 화덕

담금질 통

대장간 집게

보안경

Cut the die with the tap

Drill a flat tool-steel blank to the tap drill size and run the finished tap through it with oil. Drill clearance holes round the thread so it cuts, saw one side open so it can be set, then harden and temper it to brown.

이 단계의 재료: