On Mon, 13 Feb 2012 23:04:27 -0500, "Mike Marlow"
wrote:

wrote:


But what is 0.525mm easier than 3/8" ?
It's not. But when DESIGNING in metric, everything is done in tens or
tenths, hunreds or hundredths. So 1MM is .01CM, none of the silly 12
inches to a foot, 3 feet to a yard, 36 inches to a yard etc, and none
of the .125 inches to the 1/8 inch. You design to the .1meter or
.01meter, or 12.5mm or whatever and never need to convert by anything
more complicated than moving decimal points to convert from one unit
to another.

Ha! - you make it sound so easy...

It is. Working with wood and present dimensional material is not, but
designing a new machined part is a snap. If you start with rough
lumber, you can plane it to 19mm easy enough but with a 2 x 4 you'd be
off .1 from a round number. 38.1 x 88.9

Designing a new part and new machined tool, metric is a snap with very
few less than full mm dimensions.