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Hex Key Set: Hexagonal Steel Drawn, Bent and Hardened
A hex key is a single rod of hard hexagonal steel bent into an L with one long and one short arm; its blunt ends fit a hexagonal screw socket. The hexagonal rod is made by drawing steel through a hexagonal die, then bent and cut to length. Forge and draw tool steel to a set of sizes, bend, cut, harden and temper.
The picture: a set of six L-shaped hex keys.
高级
Two days
说明
1
1
Forge to hex
Forge to hex
Draw tool steel down and forge the larger sizes hexagonal in the swage block with the top swage, as for hex bar.
此步骤所需材料：
工具钢八角钢0.3 公斤
木炭3 as required所需工具：
铁匠炉
铁砧
横向楔头锤
型砧块
上型锤（上胎模）
铁匠钳
电焊手套
安全眼镜2
2
Draw the small sizes
Draw the small sizes
For the small sizes, point the rod and pull it cold through hexagonal holes in the drawplate, one size smaller each time, with lubricant. Anneal it whenever it gets stiff.
此步骤所需材料：
拉丝润滑剂0.1 升所需工具：
钢制拉丝板
重型台钳铁匠钳铁匠炉3
3
Bend and cut
Bend and cut
Bend each rod to 90°, short arm about a third of the long one (our proportion), and saw it to length.
所需工具：
重型台钳横向楔头锤
钢锯4
4
Harden and temper
Harden and temper
Heat each key to cherry red and quench in water, polish, then temper to blue so it is hard but springy (our temper).
此步骤所需材料：
水10 升所需工具：
铁匠炉
淬火水桶铁匠钳电焊手套安全眼镜5
5
Square the ends
Square the ends
Grind both ends square and flat, so they sit snugly in the socket. Check each key in a matching socket.
所需工具：
旋转磨石6
6
Steel for a set
Steel for a set
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