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Patterns for casting the 4-bolt base for the compound.
The design of the pivot for this compound is inspired by the pivot found on Southbend 9 inch lathe. It has the advantage of being able to adjust the angle of the compound without loosening all 4 bolts of the clamp (one of which is often under a part of the compound).
It may ultimately share a mount with the the radius-ing tool and the milling attachment(if I ever get it done). By using a unified mounting system the time required to change from one accessory to another should be shortened.
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Patterns for casting the 4-bolt base for the compound. |
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This compound is slightly wider than the OEM (original equipment manufacturer) compound and about 1 inch longer. This allows a greater travel for facing and cutting tapers. It is the same height as the OEM compound but it mounts differently. The dovetail is also wider to provide a little more stability. |
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Sodium silicate cores for the dovetails of the compound. This seemed like a good idea when I started but it has its own problems. Included sand from the cores, eats milling bits. |
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On the left is one of a set of four castings just back from the foundry. After they were cleaned up, three of these pieces were used to make final pattern plates for the cast iron castings for the compound. |
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Boring the pivot hole in the base block. The block has already been milled to thickness and size. |
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