Hello everyone, starting with the Rhino 6 Autodesk
t-Spline is no longer available for Rhino, so in the old time, this kind of really
smooth surface it's really easy to achieve in the t-spline in the Rhino
We can still make it happen. It just take a few more steps. Today, I'm going to show
you from this step, from red color, getting into the purple color. Welcome
back to PJ Chen Design channel. This channel is to share Rhino 3D
knowledge to help students and 3d model professionals to learn various Rhino
techniques. Are you ready? let's get started.
when we have a model something
like that, the intersection look really harsh. If we look at the render view, you
can see there's a fold line there. In order to make them smoother, one
way that you can do is to give the fillet edge on all
four edges, but before we do that we need to make sure they are intersect. So
what I'm going to do is using the trim tool. it's going to use this as
a cutting tool. And then we want to cut somewhere intersected, so we're gonna trim
where on the other side, so it will no longer see from this view. Okay
and then we hit ENTER, we hit ENTER again to bring back to previous command, and
this time we're gonna use those two (shape) and to trim off where is the intersected so
we're gonna trim off here, and trim off here. so on the bottom they are for
different part but one you can hit enter and select all of them and join them
together all right so one of the way to make it look a little bit rounded on
those edges we are going to use the fillet tool. Right here going to the
solid tool that you will have this "fillet edge" and
You are going to use a radius for 2, so select all the edges for radius for 2
and then you hit ENTER then you will get something like this it's not too bad
let's take a look on the render view. It's not too bad, but instead of
one line you become two lines. but you still get to some sort of the edge there.
The way I'm going to show you is take a few more steps. Let's turn on the final
result here. It takes few more steps to get that but what is good is like you
have really rounded edges. All the way from this edge to the other edge, okay
so I'm going to delete this guy and starting from the scratch. Let's start
building this structure I'm going to use the rectangular tool and turn on my
Grid Snap and counting about 4 (units) form each side
so 4 from the left, 4 from the right, and coming down here with the same
distance. Okay so that's one. And then I was just using the Gumball to rotate.
Holding my SHIFT (key) and hit the ALT key and then you'll see the "+" sign and that's
how we make a copy. Okay so I select all of them and trim somewhere in the middle
okay hit ENTER so you got that cross there we are going to use the same
radius as simple. So let's go to the fillet the curve and let's set the
radius for 2, and we want to click all those edges so there will be 2 over
there. Alright so now we have all of these, I'm going to create the
arc which is the half round shape. it's kind of snapping right here and then
going from the this point to this point. Alright so I have an arc
there and I'm going to copy that one's moving from this end point to that end
point. Okay, so now what I like to do is creating the surface, so that's going to
the surface "extruded curve straight" and let's
extruded this curve from this point to the end point, where the radius ended.
Let's do the other side starting from the end point to the end point. Alright,
so now we have 2 (shapes), instead of doing everything over again. I'll go to the top
view rotating 90 degree, hold my SHIFT key and hit the ALT key, so now I have
those copy. So the key is how are we going to make everything in between
I'm going to divide the center model
into the four parts. Let's go to make a straight line, and this is the
guideline for how the surface is going to flow, and so we are going to make
another line here. And then I'm gonna pick up those two lines and have
them split each others, so let's pick up this line, and split with this one, so you
got that one split. We are going to do one more time, we'll pick up this line
split by this line. so we have those two straight lines. I'm going to put it into
the green color, so it's easier to tell. Okay, other lines we will need is
the edge here, and here. Okay so I'm going to use the command-
it's called duplicate edge (DUPEDGE) and I'm duplicate this edge and this edge, okay
and then they will be split by those two green lines so now I have this like
quarter of the circle they will be sending to the green layer
as well. I also need the bottom one instead of trimming I'm just gonna
explode it. Now, they are right there in the green layer as well. So let me turn
off the rest of the layers. it's easier for you to see this, the green layer.
Okay so for the green layer we need to creating the surface in between.
There are few things we can think about it how to create this one. First of all, we can
create it by join those back together, and using sweep 2, so there will be
rail1, rail2, from here. Let's take a look how it will look. so sweep 2,
rail1, rail2, from here to here, and then
very quickly you kind of notice there is a line in the middle. even though the
starting point is rounded but because the end you have that point so that's
why you get this pointed surface there. Let's see the render view, so it's easier
to see. So sweep2 in this way it definitely not gonna work. Alright.
so we're gonna delete this and think about other way, if the corn is the point
it's gonna be the problem what about we don't want that point. So I'm
gonna create an arc. It's going to snapping into this endpoint and also
snapping into this endpoint, and then I want to move the arc the third point
to the end of that point, so that will be really symmetrical in this view. Now we
want to check from the side view that the arc that we draw is completely flat
on the top. because we don't want it to bump, right? so let's take a look if
this way will work we still want to use the sweep2. Rail 1, Rail 2, you go
from the bottom to the top it should be fine right, so now we are looking at this
this is really really nice we're gonna click OK
so we got a really nice surface right there now the question is how we're
gonna do the middle part, before we do that let's take a look if is anything
stick it out on the top? it's nothing stick out, so we're going to do is to
use the rotate tool, and hit "0" as center, and I'm going to make sure on the
command bar that "copy= yes" okay, and holding my SHIFT, click 1,2,3 and
4, alright, so now they are connected right this way
all right that's turn on the blue layer and make sure that they flow really nice
okay let's take a look on the render view all right so now this seems to look
really nice but look I still can see the line over there. So that means
this doesn't blend with this way. if we take a look on the "analyze" and then we go
into the "surface", and then you can have "zebra", so you pick up this surface
this, this, and then you hit "zebra" and you kind of see they are little bit off.
right there. okay, so what is the other way we can work with this surface to make it
blend a little bit better, Alright so I'm going to go back to my green and
then go back with the steps. Alright so this is one of the curve
there and actually I'm going to mirror to the other side and just for the
comparison. Okay and then we're gonna delete this one. We were using this and
this as our rail I'm going to put into the red color. Alright, so those two are
the rails. What if we reverse and see what happened. We're gonna use the green one
as a rail so that's going to the surface- Sweep2, you go here and here and starting
from here end it there. Okay so let's take a look almost identical right there
but that's turned on our layer over there
and let's do a comparison. Before we do that let's hide all the curves and you
hide them. okay so let's take a look on those and see if they are better. Okay so
going to the Surface- Analyze surface- Zebra, and let's pick up all this
this surface let's take a look on it. it seems it match much better it's
because the beginning and the end (curves) share with the same curve (from surface) okay and compare
with this one you can see it is off a little bit, and let's also take a look on
the render view. Alright so this is the one that we just made, as you can see is
get as much smoother at this point and this one you will see a line okay so
even though you are using the Sweep2 on both of the surfaces, because the
way you pick on the rails, and it indicates where the direction it goes. It actually
make a huge difference. Okay so I'm going to delete the old one and we are going
to stay with the new one. okay now let's go to the top view
we're gonna do the same thing. We gonna go into a rotate hit on "0" holding the
SHIFT (key) make sure "copy=yes" and let's go this way
alright so now we have all of these, you might see a little bit of line over
lapping because I intended to make my curve a little bit thicker, so you will
see better. Alright, they actually are just match. Now the surface we
can use is the command is right here "surface from 2,3,4 edges"
so I'm gonna pick up 1,2,3,4 (edges) and it will create surface. So let's
take a look on the render view again so that's the render view it doesn't look
too good at the center because the surface we create is from two three four
edges and you kind of see this a tiny break there. so it doesn't look good
We're gonna go back and re-evaluate the surface that we make. We're gonna delete
this one, and we're gonna call out the curve that we made. So right here let's
go ahead to staying with the green one. so the green one that we had this curve
and we also have this curve. Alright, so notice that the sweeping the in
different direction does make the surface like tiny different, but does
show in the render. In this case I'm going to try Sweep2 again so we are
going to explode this one, so it becomes two curves. I wanted to do is to
make sure the curve is matching the edge of this surface. so let's go to Sweep2 and
this gonna be Rail1, Rail2, and pick the edge, surface edge to be your
cross-section, so then we will make this surface let's turn on the render view to
take a look. Seems like it goes much better from this surface to this surface
okay, so let's take a look and see
how you look to others. So the same command for rotate, and you're gonna
snapping into the endpoint holding your SHIFT and go from 1, 2, 3, 4,
and hit SHIFT (key) so now look at the render view it looked much better than what we
have before and that's turn on this and again you're gonna select all of them.
I'm sorry, select all the curve and again you're gonna select all the
curve just the curve, just the curve, and we want to hide it, alright so just get
curve alright sometimes you see this line there but
actually they there's no overlapping over there how do I know is you can
actually join them and then this if it is overlapping you won't able to join
them. so the way I can join them I know there's no gap. We want to do one more
test. Let's go to analyze- surface and let's do zebra again. so this time I
wanna pick up the whole things and see how thing is actually flow to each others.
Alright well again this surface right there flow really well we want to see
how's the top and by by moving this you don't see much of the interruption is
going there so I will say this is a good to go for what our purpose here. This is
the way I will use for creating some really smooth surface without the t-spline
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I'll see you next Monday