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The
base of the elbow has two screw holes and a drill point which can be
produced by two methods -- a fourth movable slide in the die or by a separate
rough machining
operation.
Note: With either method a separate
finish machining step is required for the three features.
The choice of fabrication method is primarily determined by a
comparison of the costs of the two options: costs of
a second set of machining steps with added handling and variability versus the
cost of a more
complex tool with slides.
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