I apologize for the miswording, you are correct - nothing I've ever read said you could not. It's generally not recommended in the literature I've read concerning cylinder shells due to the structural instability likely to occur from shifting contents during the setback of the lift, especially so when using larger cut stars such as spider stars cut for a 6" shell.
*Edit* I also believe you are correct in that it only really applies to single break shells. I've not made many single break shells since moving up to 5" and 6" so I've stuck to pressed stars / comets.
Context: I've only read Hardt, Fulcanelli and some of the AFN articles. I've not ever attempted to build larger than 6" shells at all, and haven't built a 6" with cut stars either, only pumped stars / comets / inserts. (In fact I prefer inserts now more than stars)
Experience: in my limited experience, I've found shells built with a wall of pumped stars / comets on the exterior to be more rigid than the cut star 5" shells I've made.
Edited by cmjlab, 08 March 2023 - 03:05 PM.