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Unclenick,
ALL cartridge brass micrograph samples MUST be ground at some point! PERIOD.
Simply no other way to prepare the sample.
Maybe check some of the text books & instructional videos.
Secondly, not to put too fine a point on this, since your buddy might have misspoken,
We ARE NOT looking into this brass anywhere near the atomic level, not even close!
That would take a super powered electron microscope!
Not even close to atomic level!
This is an ALLOY, we aren't even looking at the molecular level!
Inspection that shows molecular would entirely miss the grain structure, combining of copper with zinc, ect.
We are looking at the chrystals that are BILLIONS of molicules and countless TRILLIONS of atoms.
We are talking the size of some plant cells here, in the 'Micro' world, it's barely 'Micro', and we are looking at hundreds or thousands of chrystals at one time...
Smearing will happen when you don't use enough water when sanding, or you don't keep final polish wet.
This has been pretty well figured out already, by paint guys at the least, they are working with soft poly structure that smears MUCH easier than brass!
Gem stone polishers work with stones that are much softer than brass,
Lense polishers work with polycarbonates that are much softer than brass.
The industral science has already been laid down, I'm just taking advantage of it the exact same way everyone else does...
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