I did a cake a few months ago that was all hand cut. Like Jenniffer from Cup a Dee Cakes said I let my fondant set up a little before I tried to cut it. I used an xacto knife but I dipped the blade in shortening between every few cuts. This helped with the blade getting stuck and pulling the fondant.
I used straight fondx but I did add some tylose powder to help it harden up. Here is my hand cut cake
