Hello everyone welcome back to PJ Chen Design Channel
I have a several requests to bill a Calla Lily flower. So let's talk about the
construction for those type of the surface. Are you ready? Let's get started!!
if we search the image on Google, we kind of notice it is one piece of surface
wrapping around, and this a little bit overlapping at the middle part, so we
need to starting with few curves first. We're going to come in to the top view
and we're gonna draw something like this. Don't worry about if they are not
super nice because we're going to change it later, but we kind of need to
understand how they are wrapping around. so I want them to coming over here maybe
I need to change a little bit more like this one. If this is going to be
on the top. On the bottom, I will have something really similar so I'm just
going to scale it down something like that. I do not want this like too close,
because I do need a thickness for the jewelry purpose. Try to align
the beginning point to be almost aligned together. so that will be easier for us
to do the editing. If that is something that I like, I'm going to move
this with the Gumball on the top, so this will be the top. This will be the bottom.
So this is the idea if we create some sort of cross section, we can kind
of sweep 2, then we're gonna have some sort of form is really flat on the
top, and flat on the bottom. We do need to have a flat on the bottom but on
the top, we need to have a very nice curve. so come in to the right view.
Imagine the side view of it. It almost look like something like this, and come in
over like this. Then you can make it smoother nicer whichever
gonna work for you. So I have the curve here, so my goal is to
create a curve like this, but a little curvature on the side. the command we are
going to use is "curve from 2 view". This is the first curve. This is the second
curve, and that give me the curve is something like this. This is
more to the profile that we want, and we need to do additional editing now
Let's hide this one, because we want to edit but it is way too much point there.
So we are going to rebuild it to make it simpler without changing too much of a
shape. 22-point is the suggestion, and we're gonna click OK, and see if that is
going to work. To make it organic, you probably don't want to have really
symmetrical. so maybe in some point over there, I want it right and left is
slightly different, and maybe I want this point going to go toward this way, to
have that little point at the end. You kind of do your own editing and see
which one is going to fit. I'm just kind of simply just gonna drag it
whatever just for this demonstration as long as I get the shape it look-alike.
So I'm going to stop editing now but you kind of kept my meaning of how
you get it a little bit irregular as you can see the picture that we have. You can
kind of make it really nice and smooth, or you do have some sort of a design
more like this. It's a little bit irregular, so it's up to you how you're
going to play with it. Kind of tweak it a little bit. Make sure that it
is in this shape. because it's that opening kind of hogging so this opening
is a little bit lower. We're gonna do a test by drawing a straight line coming
from this point to this point, and then we are going to do a test for the
surface. Let's do the sweep - you got rail one, rail two, cross section, and then
we get something like this. Alright it looked like it's really close
to the basic shape that we want it and we are going to rebuild this shape. Let's
go ahead to rebuild it and we want to make it will keep it 24, but we may want
to have a little bit more point on the V. So let's click okay
right here. Now we have this. Let's turn down a control point, so what we can do
is we can pick up the first one, and let's go into the selection tool, and you
can select those points so let's pick up this one, you will select all the role
together, and we are going to use the Gumball to scale it down a little bit
like that. okay and we're gonna pick up the second row with the same tool, and
we're gonna scale it down a little bit as well, so it's kind of coming into the
neck a little bit thin there, and on the bottom of this one. I actually wanted to
go a little bit wider but lower. then you can kind of play with it and
see which one that works for you. On the very top one, I think the opening that I
have may not be big enough, so I'm going to open it a little bit more, and
actually get it a bit higher.
So let's take a look on the form. It look nice and flow, and we need
to make a little bit change here. As you can see on the ghost view the shape is
getting what I want but I don't need this corner over there. The corner is
kind of really sharp, and that doesn't flow really well, so what I'm going to do
is duplicate the edges of this edge, this edge, and this edge, so let's send them
to the red layer. We are going to do is using the split tool, and we're gonna
split with the point somewhere a little bit big here, and somewhere with the
point over here, and again on this side, we want to split with the point as well
somewhere here, and somewhere here. I'm going to delete all the point there,
now with all these lines, we are going to use the blend tool, let's blend from here
to here, and we can also blend from here to here. Once we have that, we're
gonna turn on the surface that we have, and just using this one to trim the
surface over there. Again we are going to pick up this one and to trim the surface
over there. so now if this is the shape that you can keep manipulated. If this is
the shape that you like, you can go ahead to make a offset, we are going to use the
offset this surface. We want to offset to outside, and let's set a distant 4.8 for
this demonstration, and we want to get something like this. Now we have
two surfaces we just need to blend the surface in between, and make sure that
you know we close it. so it can be a solid. So we are going to do is using the
blend tool, we're gonna blend the surface but make sure that chain edge here
Auto chain=yes, and you want to click on that first edge and
and click on these second edges. We'll get a very nice form here.
Once we have that, we can select everybody and just go ahead to join it.
We need to keep it make it solid, but because of the blend the surface on the
bottom it's not completely flat, so we want to come over here and then we want
to trim the bottom off. Now we can cap it. It becomes solid. One thing I want
everybody pay attention right here. this is appear to be solid but really be
careful is you have the shape intersect back to itself, and that may cause the
problem later on, so the easy fix is we're gonna draw a straight line over
here, and using that to split this part into two, so now I have part 1 and part 2.
We are going to cap individually, so we're gonna cap this one, and we also
gonna cap this one. Now they are two solid here. 1 & 2. we just need to
Boolean Union together. Now this is Boolean Union, as you can see it
automatically get rid of the intersection and become one.
That might be something that you want to keep in mind. If you have a intersect
when you send into 3d printing, you always have some issue there. Rest of it
can you can do whatever you wanted to do. I'm simply just going to making a circle
on the bottom so let me do something like this and we're kind of moving this
circle to somewhere lower blend that circle back to this surface right there.
we actually need to line to work with. so I'm going to use the duplicate edges, and
we're gonna duplicate this one, this one. Let's change the object to the
purple layer as well as this one. To work on this, we actually don't need the
interior over there, and we might want to chop it off somewhere there, so let me
just split it with the point over here. and delete that part too.
Connected those two we can simply just using the blend tool, and we want Blend
from here to here. Once everything is done, let's click join.
Ideally, I want the shape coming down follow this contour really nicely so
what I like to do is using the extract the IsoCurve, and we want to extract one
we want to extract one go straight and somewhere close to the quadrant, and we
also make another one close to this quadrant over here. So let's take a
look at all the curve that we have now. If we wanted to flow really nicely we
are going to come into the button and I kind of giving two small lines here. one
is here and one is here. And with this line, we are going to
use the blend command. I gonna blend those two curves from here to here, and
another one go from here to here. So we no longer need those two lines, and no
longer need that. Those are just for us to find a curve that we need. As you can
see now. We have the perfect curve for the sweep. Let's go to the Sweep 2 rail.
Rail one, rail two, cross section, and cross section, and make sure they are aligned.
Then we look at this curve there. So let's turned on back to this one.
this will coming really nicely over here. Just make sure that you cap it so then
it will become solid then you can kind of boolean those two. once it is boolean,
we may want to have something in the center, so I simply just gonna do
a ball there. It can be any size, because we're going to tweak it. So I'm going to
make them a little bit bigger, and also make them a little bit longer, something
like that, so it looked like this is some something in the middle. That
will be our calla lady flower today. You can use it through wrapping around a
ring or flowing to whatever surface that you want it.
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