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Forged C-Clamp with a Tapped Boss and Swivel Pad
A C-clamp (or G-clamp) is a C-shaped steel frame with a screw through a threaded hole at one end: the screw presses a swivelling pad against the work, turned by a small bar through its head. Forge the frame from flat bar, tap the boss, thread a rod with the die, and peen a pad onto its tip.
The picture: a G-clamp drawing, with its pad, screw and tommy bar.
中级
A day
说明
1
1
Forge the frame
Forge the frame
Bend a length of flat bar hot into a deep C. Upset one end into a thick boss and flatten the other into a jaw.
此步骤所需材料：
低碳钢扁钢1 个
木炭1 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 tap the boss
Drill and tap the boss
File the jaw flat, drill the boss square to it at the tap drill size and tap the thread with oil.
此步骤所需材料：
切削油0.02 升所需工具：
金属锉
手摇钻
丝锥板牙套装
丝锥扳手
台虎钳3
3
The screw
The screw
Cut a length of rod, thread it with the die, and drill a cross hole through the outer end for a short tommy bar.
此步骤所需材料：
低碳钢圆棒0.3 m所需工具：
钢锯丝锥板牙套装
板牙架手摇钻台虎钳4
4
Swivel pad
Swivel pad
Forge a small disc with a hole, turn a short spigot on the screw tip, fit the disc on it and peen the spigot over loosely so the pad turns freely.
此步骤所需材料：
低碳钢扁钢1 个所需工具：
铁匠炉横向楔头锤金属锉5
5
Clamping force
Clamping force
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