Hello! I'm trying out a new design to slit aerial roll film from 9-1/2" to 7" so it will fit the 7" spools used in the Keystone F8. I've got the design figured out except that because I need to transport the film from a spool of one diameter across a table and onto a spool of a different diameter, I figure on using rollers to keep the film moving across the table which will be higher up than either spools. I'll be cutting the film emulsion side up to avoid damaging the emulsion, but what would be the best materials to use for the rollers and the table to avoid scratching the back of the film? Polished stainless, chrome, or copper? Some type of plastic or nylon? Thanks for any suggestions!
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