In solidworks , is it possible to trim a part against another part in assembly level
Yes, it is possible. The cut must be added to the feature tree of the part to be trimmed, but the location of the body remains defined within the assembly.
I wouldn't usually recommend this as best practice, however, since there are a lot of interlinking references. (Suggesting an alternate referencing structure is outside the scope of this question, however).
- In the assembly, click Edit Component for the part to be cut
- Insert - Feature - Cavity
- Select the part that you wish to do the cutting with.
- Hide the cutting tool if necessary. You can't suppress or delete it, as the cavity feature is referencing it.