- [Narrator] When you have assemblies
with interlocking parts you want to make sure
that there's no interference.
So sometimes you use existing geometry
to create the other parts.
In the case of this plate, I had another plate
that has to sink into it and I copied the geometry
inside of this sketch to create it.
When I was done, though, I broke some of the relationships
so that it wouldn't be edited after the fact.
This is called in-context editing.
To know what references I have in just this sketch,
I can click on display delete relations
and go to external and see that I have some relations
to another item.
In particular for this one I have a drawing
in the background and then a coincident part
on one of these centers.
So if I back out and take a look at my feature tree,
you can see here that any of the features that have
this little dash and an arrow next to it
are indicating that there's an external reference
that you have to be aware of.
When there's an x next to it, that means it's been broken.
So for this part I've gone through
and broken all of the references.
If they were existing though,
you would have a notation here noting
what the reference is and that it's still solid.
If you go to file, find references,
this section here will list all of the other parts
that you're referencing
and you can have it include broken references if you want.
Now you see without that I don't list any other parts,
but once I click include broken references,
I can see that old part that I was referencing there.
This just goes to show you that SOLIDWORKS assemblies
and part files can be connected in many different ways.
There are references for parts and assemblies
but also sketches relating to other parts,
other assemblies and other documents.
So you have to be aware of how these references work
and where you can go find them.