Homebrew PCBs

On Wed, 05 Nov 2008 08:46:08 -0600, you wrote:

>A little different subject from most message traffic: Anyone know of a 
>method to (hopefully easily) determine the copper weight on unetched 
>material (probably FR-4)?
>
>In my case, I've collected various pieces of copper clad board but have 
>no idea if copper is 1/2 oz., 1 oz, or more.

I think you'd have to sacrifice a very small area, and peel the foil
back with a knife.  Measure that thickness, and then compare.

Harvey

>
>Thanks,
>Don