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pkristof1-Visitor
1-Visitor
October 10, 2015
Solved

Can't extrude sketch as solid, only as surface

  • October 10, 2015
  • 2 replies
  • 24404 views

Hi,

I'm working in an assembly, created new component as solid, and in that if I make a random sketch, and try to extrude it, it will only allow me to extrude it as surface, and i can't click on "extrude as solid" button.  No matter how simple the sketch is.

What's causing this and how could i get it working?

Thanks in advance:)


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Best answer by rubenvillarreal

Papp,

I believe that you cannot create solid geometry while you are working on an assembly. This is because at assembly you can only remove material, not create it. You can do it as a surface because it can be use for references for new components assembled, space claims for skeletons, etc...

Remember, you cannot create material at assembly level.

2 replies

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rubenvillarreal14-AlexandriteAnswer
14-Alexandrite
October 10, 2015

Papp,

I believe that you cannot create solid geometry while you are working on an assembly. This is because at assembly you can only remove material, not create it. You can do it as a surface because it can be use for references for new components assembled, space claims for skeletons, etc...

Remember, you cannot create material at assembly level.

    P
    pkristof1-VisitorAuthor
    1-Visitor
    October 10, 2015

    Thanks for the info

    I was following a tutorial on modeling a car jack.

    I think i did exactly like there :

    1. Create a .prt where I make a simple sketch for every carjack part with the correct base dimensions, lenght etc.

    2. Create assembly, add this sketch to it

    3. Create new components for every part in assembly mode using the lines from that sketch

    In there somehow he managed to extrude as solid.

    So my question : Now that I have created that sketch, how should I create parts in the assembly using those lines as lenght, dimensions reference?

    -For every part I should make a new sketch first, project the lines from the "helping sketch" to get those dimensions, than open the part's .prt separately, and there I should edit it, extrude as solid?

    How would you do it? Please write step-by-step how should I open the part's .prt separately

    Tutorial's pictures:

    Clipboard-39.png

    Clipboard-36.png

    Here's how mine looks : ( mine is surface extrude, hollow through)

    1.jpg

    Thanks! (sorry for the english)

    P
    pkristof1-VisitorAuthor
    1-Visitor
    October 10, 2015

    Edit : Well i figured out a way, no need for more help:)

    (I just copyed the whole "helping" sketch, made new part from it, than added itt to the assembly, where there's the original sketch so i can assure the part's good placement. so I copy that sketch for every new part

    Thanks again

    Patriot_1776
    Patriot_177622-Sapphire II
    22-Sapphire II
    October 21, 2015

    Be VERY careful making things at the assembly level.  Yes, you can use quilts created at the assembly level and copy those at a part level and solidify them. BUT, if you use other PART references you've now created circular references that can cause HUGE problems.  In a case like that, best to create a skeleton part and control everything from there via quilts, etc. and that will be the first part in your assemble.  Or it can actually be done at the assembly level without a skeleton.  But, parts should never be based on other parts for geometry (it's ok for assembly constraints), all references should be to assy or skeleton geometry.

      M
      MauroStefanovic1-Visitor
      1-Visitor
      October 21, 2015

      Just a question for you Frank, as i'm good working with part, less with assemblies.

      But, about circular references, if a have an assembly with 2 parts and second part features are driven from first part (some references of second part are in first part), does this situation creates circular references? I think not. If first part has no references on second part, it's impossible to have circular references. Am i wrong?

      Thank for reply.

      Patriot_1776
      Patriot_177622-Sapphire II
      22-Sapphire II
      October 21, 2015

      Most likely not a circular reference per se, but it would be easy to make one AFTER that.  In practice, it is NEVER good to use other parts as references.  If you're going to do a top-down design, do it the right way, and then there can be no chance.

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