In order to create solid shapes, the two most commonly used features are extrusions and revolves. Extrusions take a closed-loop shape and extrude it up or down to add to an existing part or create a new solid. Revolves take a closed-loop shape and wrap it around an axis to create a round profile. In Onshape, extrusions and revolves can also be used to remove from existing parts.

Extrusions

1. Select a closed-loop shape; this can be an existing face or from a new sketch
   1. Extrusions can be done when inside or outside of a sketch; as long as the sketch is visible, closed-loop shapes can be selected and extruded
   2. Select the sketch from the feature tree to extrude all faces from the sketch (if the sketch is likely to change be careful with automatically selecting all faces)
2. Click the Extrude icon (top left of the image below)

• Solid uses closed-loop shapes to create a solid part; Surface uses lines or curves to create a 2D surface
• New will create a new part in the part studio, Add will merge the extrusion to an existing part
• Remove will cut away from a selected part
• Intersect leaves material only where the sketch/face intersects a selected part
• Click on the “Blind” drop down to select another extrusion option
  • note that some will allow an “offset” selection; this can be useful for clearances
• Select Second end position to extrude the opposite direction (all new settings can be arranged for the second direction)

1. Click the green check mark or hit enter on the keyboard to confirm

Revolves

1. Select a closed-loop shape; this can be an existing face or from a new sketch
   1. Revolves can be done when inside or outside of a sketch; as long as the sketch is visible, closed-loop shapes can be selected and revolved
   2. Select the sketch from the feature tree to revolve all faces from the sketch (if the sketch is likely to change be careful with automatically selecting all faces)
2. Click the Revolve icon (top left of the image below; it will be directly to the right of the Extrude icon)

• The same options exist as extrude on the top of the revolve menu
• The revolve axis can be any straight line in a sketch or edge of a sketch or part
• Full indicates a 360 revolve
• One direction allows a degree revolve in one chosen direction
• Symmetric splits the inputted degree rotation both directions from the faces
• Two directions allows for two unique degree rotations

1. Click the green check mark or hit enter on the keyboard to confirm