- [Instructor] We can use surfaces to create solids.
In this video, I'm going to be showing you how
to use the basic Extrude feature,
but with the end condition of Up to Surface
or Offset from Surface.
Now, we've seen the Extrude feature before,
but we didn't have a surface to actually play with,
and now we do.
So before I can do that, though,
I have to make sure I have one surface.
So right over here, I've created a couple surfaces.
So I have this surface extrude,
and I have this surface sweep.
Now I need to connect those guys together
so I can use them as one surface to end my feature.
So to do that, I'm going to come up here to Knit Surface.
It's under the Surfacing tool bar.
And just go ahead and choose these two surfaces
and say go ahead and combine them together.
So now I have one knit surface, and we should be all set.
Now, let's go down here to plane two.
Click on that, and draw out a box.
So I'm just going to start with a center-point rectangle
and just draw out something that's going to fit inside the box,
but make sure that this
is completely underneath the surface.
If it sticks out a little bit, it will not work.
It has to have a surface completely covering it
for this feature to work.
All right, so let's move that over just a little bit,
and now we're ready.
Okay, exit out of the sketch.
Now, I've got a sketch directly below a surface.
So now what I can do is click on that sketch.
I can say Features and Extruded Boss or Base.
So by default, it chooses Blind,
but I have the option down here to say Up to Surface,
and there it is.
And it's going to ask me what surface would I like,
and I'm going to choose this one right here, right?
So what that's going to do is it's going to extrude up
until it sees that surface,
and that's, again, why you have to have a surface
completely covering it,
and then click OK.
And then boom, just that easily,
we were able to create a solid
using this reference surface.
When you're done using that surface,
of course, you can hide it, right?
So I can just hide that so it's not there anymore.
And now you can see what our solid looks like.
Now, we have one other option inside of here.
If we go back to the Extrude feature,
instead of Up to Surface,
we also can come down here to Offset From Surface.
So you can put in a value here.
So like 0.25 inches,
and it's just going to move it down a quarter inch
from the original surface.
Let's go back and show that surface.
And now you can see, if we kind of zoom in here,
we can see there's a little gap
between the surface itself and what we're going to do.
Go ahead and click on OK.
And then we can see it a little bit easier,
so here it is, you can see the gap there.
And if we want to be really fancy,
let's go ahead and cut that in half.
And now we can see very clearly
that here is our surface on the top,
and then we've got a quarter inch gap,
and then here is our part.
So a couple different ways you can use surfaces
themselves to create solid features
inside of SolidWorks.