After about thirty minutes our plaster cloth has become quite firm. Remove the retaining walls and turn the whole mold assembly up side down onto the support shell. This gives full access to the clay bed which needs to be removed to expose the second side of the model for mold making. Remove the alignment keys and notice the indentations left in the Silicone Plastique®.
Tip: Applying a thin coat of Mold-Dit™ to the model before building the clay bed acts as a parting agent between the model and the clay, making removal much easier.