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Scriber: Steel Rod with Hardened Points at Both Ends
A scriber marks lines on metal before it is cut or machined: a steel rod with a hardened and tempered point, dragged over the surface to leave a shallow scratch. Many have a point at each end, one bent to reach into holes. Draw tool steel to a thin rod, point both ends, bend one, and harden the points.
The picture: four scribers, one with a bent point and a knurled grip.
初学者
A few hours
说明
1
1
Draw the rod
Draw the rod
Draw tool steel to a round rod about 5 mm thick and 20 cm long (our size), finishing it between the top and bottom swages.
此步骤所需材料：
工具钢八角钢0.1 公斤
木炭1 as required所需工具：
铁匠炉
铁砧
横向楔头锤
下型锤（下胎模）
上型锤（上胎模）
铁匠钳2
2
Point and bend
Point and bend
Forge both ends to long tapers. Bend one end over at a right angle about 2 cm from the tip.
所需工具：
铁匠炉铁砧横向楔头锤
台虎钳3
3
Harden and temper the points
Harden and temper the points
Heat each point to cherry red and quench in water; polish and temper to a straw colour, leaving the middle soft.
此步骤所需材料：
水5 升所需工具：
铁匠炉
淬火水桶铁匠钳4
4
Sharpen
Sharpen
Grind and hone each point to a fine cone, turning the rod as you go so the point stays centred.
所需工具：
旋转磨石
1000 目磨刀石
金属锉5
5
How fine a line
How fine a line
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