Oozeq air dry is useful for casting concrete.
Rapidset Cement All brand concrete, available in the USA at Home Depot, has worked well in our experience.
Form a mold in part or in whole of the Oozeq. Pour in the concrete slurry (dry mix and water combined) and allow to set.
When the concrete is set, the Oozeq and soap material may be soaked in water and rinsed away.