Casting of resins with similar plastic properties (polyurethanes).
Polyurethanes could be:
Elastic / elastomers / – pads of different hardness, pressures, and so on. Hardness is measured by Shore A and ranges from 35 to 95A.
Solid – casting models or functional details such as boxes, front panels, etc. are cast from them. Their hardness is measured by Shore D. The hardest polycarbonate grades have a hardness of 95D.
Casting may be loose or vacuum depending on the viscosity of the material.
Lemess and silicone molds / silicone molds.
This method produces functional details in small to medium series, with a relatively low price.