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What is the easiest way to make two identical parts with different sized holes at one point?
I'm a neophyte, although I once was fluent in SDRC Ideas. I'm designing a mechanism to help learn this new software. The mechanism has two concentric shafts, and two nearly identical cranks. The only differences between these two cranks is the size of the hole that attaches to the shaft ends. Since the shafts are concentric, one crank has to have a different sized hole to account for the concentricity of the shafts. I would like to be able to adjust the length of the two cranks at a later time to adjust them to fit later parts of the mechanism. I've designed one crank "In Context" using the assembled concentric shafts, but when I try to sketch the new crank In Context using the first crank as a pattern, it makes the relevant hole the same size as the first crank, and I cannot figure out how to make it fit the smaller shaft. I would like to be able to adjust the new crank length on one crank and have it change the other length automatically. Is there a better way to do this? Thanks.