After a fixed weight reduction ratio is locked in, Moldex3D will automatically monitor the cavity weight at every time step. When the cavity weight reaches the targeted weight, the melt injection will be stopped. As shown in Fig. 3, the final weight of the solid plastic part is 65.23 grams (the packing time is 5 seconds), and the final weight of the MuCell® product is 60.39 grams. The weight reduction ratio is 7.4wt%which is very close to the original weight reduction of 8wt%.