Relative dimensions in multiple parts

andy_chaplin

Hi all,
My apologies for putting this in a forum, as I guess this has already been asked.  However, I can't find the right search term to get the answer...

I'm trying to create a range of parts and I want a dimension to be relative to another dimension.  For example, I have a part with two holes.  For the first hole I want to set a dimension, and the other hole is then automatically set to 1.6 times that value.  Then I can create a series of parts just by changing the one dimension.  (In reality, my design is more complex, but if I can do the above, I can scale up the functions.)

Can anyone help me with a how to? I believe I've seen this somewhere in a tutorial or webinar, but without knowing the search term, I haven't found it.

Thanks for your help!


Andy

bruce_williams

see variables -  https://cad.onshape.com/help/#variable.htm?Highlight=variable

john_mcclary

This feature script will allow you to measure geometry and create a variable from your measurement.
This approach feels more parametric to me.

https://cad.onshape.com/documents/77baa8153589a7fc5f289829/v/7e439e4c827ba1504d4d9a58/e/d3174bf5315e6aafcb889367