Oozeq mixed with soap powder (soap, not detergent) will form a clay like material useful for casting concrete.
Successful work has been done using grated bars of Ivory brand soap mixed into Oozeq at about a 1:1 ratio.
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 and soap mixture. 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 peeled off and reused, or soaked in water and rinsed away.