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Lesson 9: WELDED AND DRAWN DOWN POINT

A

 

One end of the bar is first offset so that it may be held more conveniently in the tongs.

Take a BRIGHT RED heat, and double the bar back to a tight hairpin.

B


Clean the fire.

Take a FULL WELDING heat, lay the bar flat on the anvil face and weld with heavy blows, working from the bend backward to drive out clinker.

Work quickly over the end and make sure the back is welded soundly.

A second heat may be required.

C

Test the weld by drawing down to a long square point.

Metal of this size should first be forged over the anvil bick as the curved surface of the bick will tend to draw it length-wise.

The drawing down will, consequently, be completed quickly as there will be little sideways spread.

In drawing down heavy sections, large fullers can be used instead of the anvil bick.

D

 

Finish the point by forging on the anvil face like this -

A defective weld will split while being drawn down.

E


When cold, make a further test by dropping the point into a suitable hole in the swage block.

Drive a wedge down between the unwelded parts and hammer them apart.

A defective weld will open up as shown with the piece lying in the foreground.