B08    Identify the most effective base material regarding thermal protection and the minimal thickness which seems to be required for adequate thermal insulation.

Zinc phosphate cement is the strongest base material. Regarding thermal insulation, the thickness of the base layer is more important than the thermal conductivity of the material. To achieve thermal protection, the base needs to exceed 0.75 mm. Consequently, if the objective is to achieve thermal protection, any base exceeding 0.75 mm in thickness will do the job. However, as the thickness increases, the amalgam supporting ability decreases, particularly for bases with lower modulus of elasticity (see Hooke's Law).