Copper density = .31 lbs / Cubic inch
1 lbs / Cubic inch = 27648 oz /Cubic Foot
Copper density (.31 * 27648) = 8570 oz / Cubic foot

2 oz Copper      cubic foot
-----------  X  ----------------  = .000233 foot
Square foot      8570 oz copper

.000233 foot x 12 in/ft = .0028 inch

2 oz/ft2 is a weight per area.  Divide by a weight per volume (density) and
you get length, or thickness.

What did I miss, other than the metric unit conversions?  I admit, I did
miss Paul's first message.

George Franck

-----Original Message-----
From: Werner Engelmaier [mailto:[log in to unmask]]
Sent: Thursday, June 05, 2003 2:11 AM
To: [log in to unmask]
Subject: Re: [TN] (2) Micro-inch to copper weight conversion..Error
Alert


Hi Paul,
All of this is nice, but.......oz./ft2 is NOT a thickness--it is a weight.
It
does not convert to a fixed thickness value in any of the units you list.

Sorry,
Werner Engelmaier

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