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Extrude a mostly mirrored sketch doesn't work?

nocry3nocry3 Member Posts: 21 ✭✭

I have created a sketch for an aluminum system profile. 1/8 is drawn (meassured part) and the rest is mirrored. Unfortunately, I can not create extrusion from the sketch. Only why is not clear to me.

Best Answers


  • NeilCookeNeilCooke Moderator, Onshape Employees Posts: 4,369
    There must be a gap in your profile somewhere - if the area is shaded then it is good for extruding. A trick to find the gap is to draw a horizontal (or vertical) line through the sketch and drag it up and down to see which areas of the profile are shaded or not. 
    Director, Technical Services, EMEAI
  • nocry3nocry3 Member Posts: 21 ✭✭
    Great tip. But I can move the line arbitrarily and all partial amounts are represented as gray area. Only the whole profile not. Is this perhaps a bug?
  • NeilCookeNeilCooke Moderator, Onshape Employees Posts: 4,369
    Not a bug - keep searching. You could also show constraints (in the sketch dialog) to see if there is a coincident constraint at each vertex. 
    Director, Technical Services, EMEAI
  • viruviru Member, Developers Posts: 619 ✭✭✭✭
    @ralf, Can you share your document link with us so we can look into that issue.
  • nocry3nocry3 Member Posts: 21 ✭✭
    I think I've encircled the error, but I do not understand it. It seems that the point in the rectangle is the problem. But why? All the other mirrored points are working?

  • nocry3nocry3 Member Posts: 21 ✭✭
    edited January 2017
    Thanks for your help. My mistake but hard to find :-)

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