- [Instructor] So before we get into creating surfaces,
I want to talk about what a surface is in NX.
Now, a surface is still a zero-thickness shape,
that's all it is.
It's just zero thickness and it's basically
a shape that you're gonna use
to make eventually a solid from.
But in NX, a surface is also recognized as a body,
or you'll see it referred to as a sheet body.
And that's important, because in NX,
you can create solids from a surface,
and you can also combine solids into a surface,
which is a fairly unique thing
that you're able to do.
And that's because the surface itself
is recognized as a body similar to a solid.
The big difference is, there's no volume.
Again, a sheet body or a surface,
I use the term interchangeably when you look
at what NX calls it.
If I look over here under the Selection filters,
you'll see Sheet Body, and that is the terminology
that NX uses to describe a surface.
And again, it's a zero-thickness shape,
and that doesn't change from CAD system to CAD system,
but it's just good to know what the difference
is in NX between a surface sheet body
and what other CAD systems do.