Secret stash of cheap tuning stones?

[dshack]

http://www.harborfreight.com/cpi/ctaf/Category.taf?f=bylogo&logourl=DiamondLife%2Egif&brand=Diamond%20Life

Would there be a danger to my board using these at all, assuming they were clamped to a file guide?

[Bullwings]

those stones are pretty coarse.

they're definition of a fine grit stone was 300 grit... not fine at all. their extra fine was 600 grit.

DMT stones by comparison go from 200, 400, 600, and 1200.

that, and you also want to use them in a series, and their starting grits were like 120 or so. dunno, maybe i'm just being too picky.

[dshack]

I would assume you'd use a 600-grit arkansas or diamond afterwards, but wouldn't these be great for removing case-hardened burrs or starting a sharpening? They also sell "Alumina plus carborundum composite stones," in 180, 220, and 600 grit, 3 for $7. Again, I'd probably finish off a tune with a finer board-specific stone, but assuming one's using them wet and with a guide, abrasion's abrasion, right?

[Mark.Andersen]

I bought a set of those a couple years back. They are rather low quality. So low that I would not use them on any snowboard.