[TheForge] Re: surface finish

[Mike]

For evening out finish between unadorned sheet and worked parts or
areas, I'm partial to 3M Clean & Strip(tm) discs., 6" dia x 1/2" wide
x 1/2" arbor.  Because these are used on edge, such marks as they
leave are straight lines (if you're careful) rather than the ugly
tangled crescent marks of a side grinder/sander.  C&S discs are
coarse and sharp enough to remove mill scale from sheet and bar.
These are (sort of) soft discs, pretty much like very coarse
Scotch-Brite(tm) so they conform to irregularities in a surface.

If that's too coarse a finish, they're also available in fine and very
fine grits but the finer grits don't cut mill scale very well.

3M part #048011-00948, max rpm 4000, packed 15 to a case

The same product is also available pre-mounted on various mandrels but
you have to run them in a die grinder or equivalent 'cause they have
to go fast.  Using C&S in an electric drill doesn't work well enough
to be worth the expense.

- Mike

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