Love it SLIDER7W. Its been over 44 years since I studied any physics or math and I had forgotten that 1 mil is not 1 mm. Thanks for that wonderful reminder. It is quite helpful when dealing on-line where most folks use the terms interchangeably. But then a lot of those folks do not know the difference between to and too or then and than and gobs of other stuff, let alone math or physics things.
As you said 1 mil is 0.001" while 1 mm is 0.039370" or almost 40 times greater (thicker, in this case). Best regards, Murf (age 78)