Getting ready to put the finish on some curly cherry plywood I am using
for a curio cabinet. I was wondering, since veneer is so thin on
plywood these days, how to prep the surface for the shellac?

Sand with 180? 220? 320? to start with, I don't know where they stop
at the factory.

Not sand at all and just shellac?

I'm afraid to run the card scraper since the material is so thin, and
I've actually learned to sharpen on I could make some decent curlies
right through!

Alan