I work with high solids loading alumina aqueous suspensions that are poured into a 3D-printed mold and then dried at a constant temperature and humidity. The problem I suspect that I am having is that the visible sedmentation (how the suspension within the mold seems to slump downward like a small sinkhole) of solids within the mold causes fatal cracking/fracture in the brown-body after mold burn-out. The exterior features appear well-rounded but the sample will simply split in half along the axis of the thru-hole geometry within the middle of the sample. Any input or recommendations would be appreciated.