- Under the surface tab there are a couple
of offset tools I'd like to talk about.
First is standard offset surface.
This offset allows you to pick either a singular face
or a chain of faces to offset.
You just have to make sure you have your
selection intent set up to demonstrate that.
So if I want tangent faces or single face
or body face, I can use selection intent to
pick what I want,
in this case the body faces,
and offset that surface.
I can have positive and negative offsets.
So just pay attention to the arrow head,
the manipulator and make sure it's going in
the right direction and simply enter in the value
you want to go and select okay.
Just like that.
Next is,
let me go ahead and hide this,
under the surface operations tab,
more,
we have what's called variable offset.
Variable offset does not allow the selection of
additional faces as you can see here, there are
no selections other than the initial face that you pick.
And with that,
once I specify my face,
you'll notice it puts the manipulators
at the four corners of that surface.
I can go positive, negative,
with that variable offset.
I can reverse the direction.
I can tell it to apply all and it evens everything out
to one distance for that face.
Also under settings,
let me turn off my apply all,
and I'm going to grab this manipulator and I'll pull it up.
I'm going to pull this one up as well.
The way it's doing it's transition currently is
a linear, I can also say cubic.
And you can see it gives me a nice cubic transition.
It changes the shape a little bit,
so if you have say,
a ramp of some sort or you have to go 10 millimeters
on one side and 20 millimeters on the other side,
you have a control over the way that shape flows
from one side to the next.
Keep parametrization basically tells the system
that I want to maintain the amount of math on the base
surface to the offset surface,
and with that,
when I turn that on and off,
you can see that there is a shape change.
So this is more of a rough offset versus a true
offset distance, so you can see here
there is about two and a half millimeters
of deviation at that location.
That's the greatest amount of deviation
that it's detecting,
so when I turn that off it goes back to,
you can see that there's literally quite nothing
as far as deviation goes that's well within
my distance tolerance.
So the variable offset does eat up quite a bit
of tolerance if you are trying to force a
parametrization as well as the greater the distance,
and if you have a lot of curvature on that surface,
it's going to obviously going to create a bit more
of a deviation from the distance tolerance.