Treated spiral sewn wheels

[easleysp]

What compound used on what metal seems to work best with the treated spiral sewn wheels? I'm using a converted 1/2 hp 3500 rpm bench grinder to buff either aluminum or stainless. Any opinions? Thanks.

Steve

[mpierich]

Treated seem a bit more stout - I switch to one when I need more aggressive material removal but not as much as a sisal.

[easleysp]

I tried an 8" with some emery on a stainless rotor cover from a motorcycle and I'm still getting scratches like I was from the sisal/emery. The non-treated spiral/green had the same results, scratches. Could my SFPM be too much for the stainless? The wheels I've used today are all brand new, so contamination isn't a factor.

Steve

[mpierich]

Well, if you're sure the scratches weren't there b4 you used the emery, maybe skip emery and try something else, or go back and sand it w/400 or 600 and try again. So far for me it has been trial and error, while incorporating tips from people in here.

[easleysp]

I took it to work yesterday evening with intentions of sanding on it, of course I never got the chance. Gonna try again today. Thanks.

Steve

[pickleboy]

my first wheel was a treated spiral, it is definitely stiffer the non treated. as for the scratching on stainless, how thick is the part? if very thin than it may be from the wheel if not then i would agree with mpierich it was probably there before polishing but you may not have seen it. keep in mind stainless is very hard material even in its mildest alloys. if the sanding and prep is correct the polishing is just that making it shine. also most stainless has a natural grain structure that you can see so the grain lines/scratches are very hard to get rid of. on alum i sand to 400 grit due to almost no grain lines, i would suggest for stainless you go to at least 800 and try again.