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Can I sketch on the side of an extrusion?

peter_loronpeter_loron Member Posts: 5
I have a sketched circle which I have extruded into a cylinder. I can start a new sketch and select the circular face of the cylinder as the surface for the new sketch, but I do not seem to be able to select the wall or side of the cylinder as a sketching surface.

How can I add to the side? For example, I want to add a pipe coming out the side of the cylindrical tank...



  • peter_hallpeter_hall Member Posts: 196 ✭✭✭
    I would create a plane tangent to your curved surface. Draw a circle on this plane, extrude two ways outward from your curved surface and inward so it gos into your curved surface.
  • NeilCookeNeilCooke Moderator, Onshape Employees Posts: 2,693
    Or if you sketched the circle on the origin, you can use any of the two default planes that intersect the cylinder axis to sketch on, then extrude outwards.
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