Part Design Guidelines
It is recommended that basic part design principles from thermoplastic injection molding, are followed for design of silicone parts.
Uniform wall thicknesses are preferred in silicone injection molding although silicone material does not sink and warp like thermoplastics.
It is still suggested for silicone parts, as it allows for uniform silicone material flow in the mold during the liquid injection molding process.Silicone parts allow the designer an added advantage of designing with heavy undercuts as the material has the ability to deform easily and will expand and relieve itself from tooling geometry such as cores and severe undercuts.Silicone parts wall thicknesses begin from 0.015″ and go up to inches.
It is advised to avoid sharp corners and edges, as this could propagate a tear during the silicone prototype or silicone part demolding process.