From an initial medical diagnosis:
A combination of synthetic materials are heated until soft and are then applied to the patient's foot with the aid of impression or expansion mechanisms.

• Impression: Thermoplastics
  

SPCT

OPCT

pre-cut modules

topsheets

• Expansion: Thermo-expansion and hardening.

Liquids

• Impression:

temperature controlled

uniform & progressive

• Expansion: no need for heat.

The key components for moulding with contained force are:

• Impression:
  

bodyweight

membrane

Vacuum bag

• Expansion:

chemical reaction