Lesson 9 - Model a Sloped Curve 2x1 Part - SolidWorks Tutorial: LEGO Off-Road Buggy

[@JernD]

Neat trick on the shell! Out of curiosity why is necessary to create a new sketch to close up the hole between the left and right hand sides after the shell operation? Can you instead simply select that face and extrude it?

[@FullyDefined-Design]

To extrude in SolidWorks you require a sketch. Alternatively, you can use the tool "Move Face" (as you've described), which works well in most scenarios, but not always. Creating a new sketch and boss-extrude is a 'safer' option for a novice user