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Is there a way to extend a surface like "surface extend" in Solid works?

jonathan_fussman
jonathan_fussman Member Posts: 1 ✭
in Community Support
I'd like to extend a surface so it can be used to split a body

Answers

  • brucebartlett
    brucebartlett Member, OS Professional, Mentor, User Group Leader Posts: 2,148 PRO
    No command to extend the the edges. If it is planar you could transform with a uniform scale. Not ideal but another option would be to thicken, move faces on the edges then delete the unwanted faces so you are back to the original surface. 
    Engineer ı Product Designer ı Onshape Consulting Partner
    Twitter: @onshapetricks  & @babart1977   
  • owen_sparks
    owen_sparks Member, Developers Posts: 2,660 PRO
    Can't you extrude the edge of the surface?
    Business Systems and Configuration Controller
    HWM-Water Ltd
  • mahir
    mahir Member, Developers Posts: 1,324 ✭✭✭✭✭
    Owen, the trouble comes when you have a non-planar surface. Image you have a partial ellipsoidal surface. Extending an edge would be more complicated than just extruding or revolving an edge.

    Bruce, I feel your pain, but in the meantime you could generate a patch surface with a loft using multiple profile/guide/path sketches. Make sure to select the appropriate end conditions (tangent/curvature continuity).
  • owen_sparks
    owen_sparks Member, Developers Posts: 2,660 PRO
    mahir said:
    Owen, the trouble comes when you have a non-planar surface. Image you have a partial ellipsoidal surface. Extending an edge would be more complicated than just extruding or revolving an edge.
    Ah, yes, of course.  Sorry silly suggestion.

    Owen S.
    Business Systems and Configuration Controller
    HWM-Water Ltd
  • maximilian_schommer
    maximilian_schommer Member Posts: 32 ✭✭
    Hi,

    You can use this custom feature to extend surfaces. 
    https://cad.onshape.com/documents/b1b694bd5db0f702f9dc4b3b/w/436b0d32f2538e0e9150e29a/e/573036cc6a83f62636116dce

    It's limitation is that curvature is that it is not possible to control the curvature of the surface, so it will attempt the highest level of continuity, but sometimes will have to resort to G1 continuous surfaces.

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