Wasn't sarcasm. Sorry.
Actually some do have a nice high-gloss finish, inside and out, - normally white, zinc based coating as they spend most of their life in the sun.
The other stuff they use for drilling is not as nicely finished, but still pretty good.
My point being you don't HAVE to shell out a fortune for good CF. But really, Aluminium is as good or better for most applications.
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