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Steel Drawplate with Graded Tapered Holes, and Draw Tongs
A drawplate is a hardened steel plate pierced with a row of tapered holes, each a little smaller than the last. Annealed wire, filed to a point, goes into a hole just smaller than itself and is pulled through with draw tongs, coming out thinner; plates also come with square, half-round or hexagonal holes. Make the plate and the tongs.
The picture: two drawplates with numbered rows of holes.
高级
Two days
说明
1
1
Forge the plate
Forge the plate
Forge tool steel to a flat plate about 150 × 35 × 8 mm (our size) and anneal it.
此步骤所需材料：
工具钢扁钢1 个
木炭2 as required所需工具：
铁匠炉
铁砧
横向楔头锤
铁匠钳
电焊手套
安全眼镜2
2
Drill and taper the holes
Drill and taper the holes
Lay out a row of holes stepping down in size (step 5), drill each, then open it to a taper from the back face with a hot tapered punch, so it is widest at the back and narrowest at the front. True each mouth with a needle file.
此步骤所需材料：
木炭2 as required所需工具：
手摇钻铁匠炉
热冲子
扩孔冲子
什锦锉套装
重型台钳电焊手套安全眼镜3
3
Harden and temper
Harden and temper
Grind the faces flat, harden the plate in water and temper it to a straw colour so the holes keep their size.
此步骤所需材料：
水10 升所需工具：
旋转磨石铁匠炉
淬火水桶铁匠钳电焊手套安全眼镜4
4
Draw tongs
Draw tongs
Forge two short, stout jaws with long reins from wrought iron, file cross teeth in the jaws to bite the wire, rivet them, and bend the end of one rein into a hook so the grip can be held or hauled.
此步骤所需材料：
锻铁条2 个
铁铆钉1 个木炭2 as required所需工具：
铁匠炉铁砧横向楔头锤热冲子
金属锉铁匠钳电焊手套安全眼镜5
5
Hole sizes
Hole sizes
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