Best way to scuff a clean head

[bigd1101]

Tomorrow I'll be removing the head for a new gasket. Once I get the head surfaces clean, what is the best way to scuff the surfaces just enough to get a good seal with the graphite gasket I'll be using? I hear that some methods will leave a fine abrasive that can get into the pistons or oil and do some serious damage if one isn't careful. I'll stuff rags in the pistons holes, but I prefer to try and use something that won't leave a residue.





Don