Editing derived parts imported ?

glenn_pierce

I have an assembly of a bot 3d printer that I imported from a step file from a third party.

I imported to

https://cad.onshape.com/documents/07388f04120dfa3dfde85284/w/6e6f6c38c69002c1e5dfe6bf/e/b7fecb0b2b24424c76e002fd

I have a query about a how to edit parts though well I guess part studio's and assemblies.

I want to created a new length of the 2040 extrusion say.

If I double click one of the extrusion lengths in the assembly I get taken to a part studio.

Here I see many derived parts but double clicking them doesn't allow editing. Is the info for those derived parts not there. How would I go about adding a new length. Of extrusion. 

Thanks

jelte_steur814

the parts are all there, just as an import. so there are no features building the part to edit afterwards.

a move face could have been used to alter the length

glenn_pierce

In the end I created a ned model in the same parts studio based on a new sketch. I assumed the derived part info is not there to edit.

jelte_steur814

the parts are all there, just as an import. so there are no features building the part to edit afterwards.

a move face could have been used to alter the length