Cutting vellum sheets?
 

I'm trying to trim vellum sheets to use as overlays for different size cards. My Fiskars slicer cuts a sheet but with a rough edge. It's not jagged, just not smooth and "nice" looking. I had put a new blade in recently. I have a mini-cutter, guillotine style, and wonder if that would give a nicer edge. Suggestions? I encountered the same results with various shape punches that I've used in the past, and would like to find a way to use vellum for card components. Thanks in advance for your help!

I use a craft knife when I do mine.

If your trimmer is a v-blade type, then that's probably why you're getting a rough edge. They rip through the paper as opposed to cutting it like a guillotine or rotary type trimmers do. A craft knife is a good choice. I have a rotary trimmer so I haven't had that problem with vellum. If you have a quilters ruler and a rotary blade, that would work also.

TRY CUTTING IT WITH A PLAIN PIECE OF COPY PAPER BEHIND IT TO GIVE IT SOME STABILITY.

Thanks for the suggestions - appreciate the help.