In this case I would probably simply use the cavity tool. Edit the insulation part in the assembly and click cavity, might need to drag it to the mold tools toolbar or just hit "w" on the keyboard and write cavity. With cavity tool active click the plate.
In this case I would probably simply use the cavity tool. Edit the insulation part in the assembly and click cavity, might need to drag it to the mold tools toolbar or just hit "w" on the keyboard and write cavity. With cavity tool active click the plate.
2015 SOLIDWORKS Help - Mold Tools - Cavity
Many ways to do it though.