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![Automotive Core & Cavity creation - Step 1](../UserFiles/636/Image/youtube/IzmgrV2e-_0.jpg)
Automotive Core & Cavity creation - Step 1
Step 1 of the core & cavity construction process. The hole filling process uses a combination of tangential curve construction, surface editing and new surface building maintaining shape curvature.
![Automotive Core & Cavity creation - Step 2](../UserFiles/636/Image/youtube/3N1t-MzThus.jpg)
Automotive Core & Cavity creation - Step 2
Step 2 of the core & cavity construction process. The internal clip shut off is built using a combination of surface extrusions, tangential extensions, surface trimming and hole filling.
![Automotive Core & Cavity creation - Step 3](../UserFiles/636/Image/youtube/Kn5qjcjvBSg.jpg)
Automotive Core & Cavity creation - Step 3
Step 3 of the core & cavity construction process. Closing off the internal holes using a combination of automated hole filling techniques, surface trimming and drape surfaces.
![Automotive Core & Cavity creation - Step 4](../UserFiles/636/Image/youtube/998ZGdpbIfw.jpg)
Automotive Core & Cavity creation - Step 4
Step 4 of the core & cavity construction process. Complex shut off with surface extraction, curve concatenation and 3D offset, draft surface from edges, fillet construction and surface trimming.
![Automotive Core & Cavity creation - Step 5](../UserFiles/636/Image/youtube/IopDlgL7kzE.jpg)
Automotive Core & Cavity creation - Step 5
Step 5 of the core & cavity construction process. Building parting faces with tangential face extension, surface extrusions, 3D curve construction, drape surfacing and surface trimming.