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[–] screamingrubberband [S] 0 points 2 points (+2|-0) ago 

Actually, they are very similar... The machine moves the cutting tools to x/y/z coordinates to make a part, but most of the focus is on how fast to move or cut or spin.

CMMs move a measuring tip to specific x/y/z positions to see if the part is actually there, or how far away from 'there' it is, but they are much more delicate - the motors that control each axis don't have to drive a 40 lb tool! However, the positioning accuracy of a CMM is (should be) far more accurate than a machine tool... although in recent years the machines are getting pretty accurate, some OEMs have coolant temperature monitors and chillers so they can hold .0005mm accuracy. (Well, that's what the sales brochures claim!)

[–] ArielQflip ago 

As long as the coolant chillers don't get clogged lol~ spouse.