Lesson 5: HARROW GAUGE or SCRIBER
Before forming the eye, the acute bend at the root of the loop must be strengthened by adding extra metal in the form of a small wedge, made from 3/8" round bar, welded into the rod. At a BRIGHT RED heat, the wedge is first drawn to a chisel point so- |
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Next a dent must be made each side of the wedge to prevent it falling out while being welded, so at a NEAR WELDING heat, place the wedge end on the corner of the anvil and strike it with the hammer like this- |
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Lay the wedge end on the anvil table and cut off about ½" with a hot chisel. |
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Take a NEAR WELDING heat and bend at this mark to a hairpin shape. Force in the wedge and close the hairpin to grip it tightly. |
Hold the bar with the short leg of the hairpin standing up thus- Weld in the wedge with moderate blows delivered at the
angle shown. |
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like this- then turn it over as in Lesson 4 C to close the eye to
the shape as shown in the next illustration, H. |
Here is the eye completed- |
Flatten the end as shown in the drawing. |
like this- And then cut off to match the point as shown in the drawing. |
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