Unfortunately, I am also a noviceI work in the field of electronics and mechanicsManufacturing various devices for various industrial sec...
Usually designing machines like this the devil is in the details. Texture, hardness, viscosity, shape, stickiness, temperature of the mixture you are putting in the mold will determine the final mold material and design requirements. The mold design for each product will be dependent on exactly what you are trying to mass produce for this reason. This is why mold experimentation is very important.