I don't have a lot of experience with phenolic resin, but the experience I have seems to indicate that's it's not very good for cut stars. It's true that the stars will dry as hard as rocks, yes. But cutting them is a nightmare! At least, it was for me. It was like trying to cut cake into little cubes. When I used phenolic resin to roll stars, they stayed soft for several weeks. When I dissolved phenolic resin in isopropyl alcohol and evaporated the solution on parchment paper, I was left with a soft pancake of resin that stayed soft for almost a year! This stuff does not seem to like to give up the alcohol very easily.
I think where phenolic resin really shines is with pumped stars, where the alcohol percentage is just enough to activate it as a binder, but not enough to allow it to form a skin.