McMaster-Carr website has surface finish scales for about $60USD.
[green]"I think there is a world market for maybe five computers."[/green]
Thomas Watson, chairman of IBM, 1943.
Have you read faq731-376 to make the best use of Eng-Tips Forums?
2B or not 2B. That is the question.
Wether 'tis nobler in design to suffer the slings and arrows of outrageous mill finish, or to take up tools against a sea of non-conformances, and by buffing end them? To grind; to polish; no more; and by polishing to say we end the heartache and the thousand natural shocks that manufacturing is heir to.