This is the Z-core print I tried. So some preparations are necessary for a really proper Z-core print just so some color shows on the print. Vrml files are used on this printer for it. Beyond that I've discovered some material definitely works better than others, and this isn't a flexible material. In fact, this is the most brittle print yet, but it confirms my notion that this material is amazing for a cleaner print. It's my favorite of the bunch.