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<p>[QUOTE=&quot;cwtokenman, post: 769625, member: 2100&quot;]I am an engineer with mechanical and industrial engineering degrees from Kent State U. and Youngstown State U. I&#039;ve done specialty machine design for the past 33 years on a wide spectrum of machines - from light bulb filament winders that you could hold in your hand, to strip mining equipment where one gear could be over 30 feet in diameter. Engineers need to be precise. I had worked for a precision grinder production company, and our grinders could hold dimensional tolerance on production parts within 4 millionths of an inch. Make a thousand vertical slices thru the diameter of one of your hairs, and the thickness of one of those pieces represents the range of variance in size.[/QUOTE]</p><p><br /></p>

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