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There's a Wiki article you should look at:

Using micro abrasive film - Straight Razor Place Wiki

And if you search for "sandpaper" in the Honing forum, you'll get lots of information (including...

I started out using wet-or-dry silicon carbide sandpaper -- auto-body stuff -- taped to acrylic plastic bases. You _can_ set bevels, and I never had a problem with grit getting stuck to the razor. ...