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Steel Hand-Sewing Needles from Spring Wire
A needle is a short length of hard steel wire with a point at one end and an eye at the other. Made from annealed spring-steel wire, it is pointed and pierced while soft, then hardened and tempered so it flexes instead of snapping, and finally polished smooth so it slides through cloth.
高级
2 hours for a few needles
说明
1
1
Cut blanks
Cut blanks
Cut annealed spring-steel wire about 1 mm thick into 5 cm lengths.
此步骤所需材料：
弹簧钢丝0.5 米所需工具：
钢锯
6 英寸数显卡尺2
2
Flatten the head
Flatten the head
Tap one end flat on the anvil with the ball peen so it is wide enough to take an eye.
所需工具：
铁砧
圆头锤3
3
Drill the eye
Drill the eye
Clamp the blank in the vise and drill the flattened end with a fine bit in the pin vice. Shape the eye long with a needle file and smooth its edges.
所需工具：
台虎钳
手用钻夹
钻头套装
什锦锉套装4
4
File the point
File the point
File the other end to a long, sharp, round point, turning the blank as you file.
所需工具：
什锦锉套装手用钻夹5
5
Harden
Harden
Heat a needle held in tweezers until a magnet no longer sticks, and drop it straight into a lidded tin of oil.
此步骤所需材料：
菜籽油0.5 升所需工具：
丙烷喷灯
耐火砖
尖头镊子
磁铁
带盖金属提桶6
6
Temper
Temper
Clean it bright and heat it gently until it turns blue, as for springs. Let it cool.
所需工具：
丙烷喷灯
砂纸7
7
Polish
Polish
Polish the needle on fine paper and the whetstone until the point and eye are smooth to the touch.
所需工具：
砂纸
磨刀石8
8
Troubleshooting
Troubleshooting
Needle making troubleshooting.
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