Shelling the Cups Click Shell on the Features tab. The Shell feature is used separately on solid bodies; one shell feature applies to one body. In the PropertyManager, under Parameters: Select the top face of the smaller cup for Faces to Remove . Set Thickness to 2. Click OK to hollow out the selected cup by removing the top face and creating 2mm thick thin-walled features on the remaining faces. Repeat steps 1 through 3, using the top face of the larger cup for the second shell feature. Parent topicMultibody Parts Previous topic Local Operations Modeling Technique Next topic Creating the Connecting Piece