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JMW Interesting thought. I certainly agree that standards can be a handicap to new and emerging technologies. Standards actually makes the engineer's work more difficult as everything (designs) must be altered to suit the standards, which can be (and mostly are) outdated in most respects. It...

Very interesting thread indeed. I was fortunate enough to be born into a SI society, and thus "feel" in SI units. I have to agree with the defenders of the Imperial units: if one clearly specifies the units, no-one should feel uncomfortable. In fact, how boring would life be if...

Thank you everyone. I suppose I just needed some guidance in approaching this strange problem. I realize that it sounded like a stupid question, so I appreciate your professional opinions. For interest sake: Barry1961, the chuck is not half size from the one it will replace, it is just the...

Everyone I am involved in a workshop area where huge (up to 7 ton) rollers (at a steel plant) are reconditioned. This involves recentering after welding it up and heat treatment, followed by machining down to size. The current cracked chuck of the recentering lathe has 4 jaws, each...