- When SolidWorks originally creates surfaces
it generally creates them as a square rectangular profile
and then trims them to size.
Now you can use the Untrim Surface tool
to get back to that original shape.
Or if you've already made some cuts or changes to a part,
you can kinda use this as an undo tool.
Take and add material back
or untrim that surface back to it's original state.
Let's take a look.
Choose a selection here.
If I choose this one here,
notice it just automatically creates this
rectangular surface that that was cut out of originally.
That's one option you could do.
Click on that, okay.
And then when I created this surface here,
I used that up to surface command so up to this surface here
but really that surface goes all the way out to here
and then we're using this surface here to cut it.
So if I go up to Untrim Surface,
I can then choose this surface here.
As you can see, it goes right back
to the way it was prior to being cut.
Go ahead and click on okay.
There it is.
Do the exact same thing over here.
Untrim Surface, choose this one.
Again, it turns back into a rectangle.
And then click okay.
So, you can pretty much use the Untrim Surface
as almost like an undo tool.
Or sometimes it'll allow you to kinda extend surfaces
very easily back to their original state.
That might help you if you're gonna be using
an extrude up to surface or something like that
and you just want a little bit bigger surface.
It's a very useful tool especially if you're
working in modifying a lot of different surfaces.
That is the Untrim Surface tool.