I think I got some of the emery cloth a while back for sanding metal, I think the ones I had were very course. I don't have them anymore as they were too course and the stuff comes right off if you get them wet at all.
Is
NORTON ABRASIVES-DIY - - - MetalSand™ this what you got? If so the grits are listed here
NORTON ABRASIVES-DIY - - - Sheets
They're
Course 60-80
Medium 100-120
Fine 150-180
The ones that I use and I think that are most generally used are these
NORTON ABRASIVES-DIY - - - SandWet™
They're available at woodcraft if you have one local to you. I had some trouble finding all of the grits at stores like lowe's and home depot. If you do these little contour pads woodcraft has are also very useful to help with the cramping hands
Contour Sanding Pads - Woodcraft.com
With a little effort you can make something to hold the blade too, I made this with minimal skill and tools, really just a drill, handsaw and some epoxy to hold in the magnets from some scrap wood. I made two, one I pitched out as I used 3 of the 1/2" magnets and that was too many it kept the blade about 1cm off of the sanding block. My 2nd attempt I put the small 1/8" magnets closer to where the edge would rest to keep the blade down while sanding. They're rare earth magnets and are pretty strong, the little ones aren't too strong though but they definately fulfill their purpose.
That blade is still a work in progress
