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-GURU
ANVILFIRE
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Tonights demo will be a continuation of last week's.
Last week we discussed punching holes and slitting. Tonight we are going to look at how far to slit and what we can do with it.
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Figure 15 |
Figure 13 |
Figure 14 |
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-GURU
ANVILFIRE
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A little logic will tell you how long to slit for a punched hole. For a square it is the length of two sides minus about 5% to alow for drifting a snug fit.
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Figure 16 |
For round holes it is a little tricker.
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Figure 17 |
Figure 18 |
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-GURU
ANVILFIRE
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The minus 5% lets you round PI to an even 3 (whoops) and the adjusted length of the slit is 3 time the radius.
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Figure 19 |
For punching square bar on edge you need to start by forging a narrow flat to set the chisle on. After making the flats mark the length of the slit on the flat.
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Figure 20 |
Figure 21 |
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-GURU
ANVILFIRE
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There are several ways to support the work to split it on edge. Supported on the anvil shelf, in a set tool (shown) or on a swage block.
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Figure 22 |
Figure 23 |
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-GURU
ANVILFIRE
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Split the work about to center and then turn it over and finish from the other side. When done close up the split and square the stock back up.
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Figure 24 |
Now to make something. Above we have split the bar several inches (about 5-6 in 5/8 bar).
We can open this up to make this pleasing shape made of triangular bar. . .
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Figure 25 |
The open oval shape can be used on its own or we can continue to mash it down like this.
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Figure 26 |
Then it can be flatten and the ends pointed as shown. For the mass of these corners to work out you need to bring the side points up to a welding heat and reweld just a little back into a square when you point it.
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Figure 27 |
This one has had the bar cut off and pointed on the end too. This gives us two different shapes. A four pointed star and a mid bar element.
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Figure 28 |
Using these two elements and more square bar split on the corner you can produce this VERY distintive piece. All using the same techniques.
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-GURU
ANVILFIRE
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Very stout. Makes an ugly looking wepon too. . .
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RALPH
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Jock, didn't some of Francis' work on display at Flag have that detail?
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-GURU
ANVILFIRE
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It may have. The first time I saw this was at the Ripley, WV conference in 1984. Josh Greenwood made one at an open forge just showing off!
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