Cannot make sub-assembly flexible

[barrowfordred]

I have an assembly of a piston which can move up and down in a tube. Yet when I insert this assembly into a new assembly as a sub-assembly and try to change it from rigid to flexible I get the error message - "sub-assemblies with layout sketches must be kept rigid".

Seeing as I don't know what a layout sketch is I'm at a loss as to how to change the assembly to allow it to become flexible.

[bhamze]

What version of SW are you using? Can you share the part so myself and others can take a look? I recreated a similar sub-assembly and was able to make flexible. With out seeing your part file its hard to figure a solution.

[DannyB]

Have you created any Sketches or references to the parts or sub assembly within an assembly ?

[barrowfordred]

I'm on version 2008

Have you created any Sketches or references to the parts or sub assembly within an assembly ?

Not as far as I know. There are reference sketches within some of the parts within the sub-assembly, but they don't affect the sub-assembly when it is just an assembly so I wouldn't have thought it would affect it later?

 

I don't know how to share the file.

I've redone the assembly and now it can be made flexible as a sub-assembly so I must have done something different 1st time.

Thanks guys.

Edited August 9, 2010 by barrowfordred

[shift1313]

When you look in your Feature Tree SolidWorks is pretty good about showing you references. You will have something like this -->X next to a sketch or feature if it has a broken reference for example. Look for these signs. You can also right click on a part or feature and show parent/child relationships or references. You have to be extremely careful when modeling parts within an assembly as well because if you do things like click on a face, you create a reference and a relation.

 

Glad you got it working though.

[barrowfordred]

Thanks I'll take a look.