Hello, everyone welcome back to my channel PJ Chen Design. Today I'm answering
question from my youtube subscriber. How to make a split ring (shank) so we are going
to do the design on the split ring, and I also like to talk about how to flow the
stone on the ring shank. If you're interesting in the middle part for halo
ring. There is another video talking about how to make them, and also the prong set
please see the links below. Are you ready? Let's get started!
so we are going to starting with the ring shank. And again, if you're
interested about how to make this part for halo ring, you can take a look on
the video links below. And we will starting about the ring shank. So I'm
going to start at the front view, and set up my ring shank diameter is 16.
The reason I put it this in this proportion is I will need to trim it off
later on. So I need to actually have it extra thick. The only thing you want to
pay attention is about right here. The culet of the stone right about
in the tip of the stone. You don't want to get below the ring shank area.
Otherwise you will cut it into it. Okay, so I'm going to keep this in this area.
And I'm gonna lock it. So we won't accidentally to move it. Alright so now
let's take a look on the right view. In the right view, I'm going to draw a curve.
Roughly, it's going to be like this. And it's gonna coming up and it
will roughly going something like this. Alright so our goal is to have a shank on
the side view look like this. Now, a lot of time, when you are trying to
work on the right view, you may snapping it into somewhere else. So at the front view
it look really weird. So what we wanted to do
is we go to the right view again. and we picked up this curve, and let's go ahead
to do "project to C plane" so what it does... and we want to delete the input
object. so what it does is giving a really flat curve, which is completely
flat to the construction plane. Alright, so now we have this one. We are going to
use the command is living under the curve. You have this one "curve from 2 views"
Let's go ahead to record the history first. And then let's go ahead to
do the "curve from 2 views". So we're gonna click this curve as a ring shank
and this curve. Very quickly you're going to get this curve right here. Now if we
look at it, and it is way too far away. We may need to edit at this point.
For example, if you turn on a control point you can actually say, well, I actually
like to come out a little bit, and you can see that curve is actually follow
with your original curve. Okay so I'm going to keep it like this, and decided
where is my ring shank. And thickness is going to be. I'm gonna draw a rectangular
and snapping to the bottom of that ring shank, for example, I'm gonna have my
stone this 1.8 millimeter, so I may want to have a length for about
2 millimeter or 2.1, 2.2 mm depends if you want to have a
radius (on edges). so Let's set it for 2.2, and then the second number is how
thick you wanted the ring shank to be. I'm going to set it at 2 (mm). Alright, so
this is my profile is going to be, and that's move it back to, from the midpoint,
back to the quadrant. Alright so that's our first one. The second one, I'm simply
just gonna copy from the midpoint to the quadrant to the other one. Alright so
let's take a look now it feel like it is way too far from the center part, so what
we can do is we want to move it back. You want to over lapping just a little bit
to make sure you can boolean it really well. So let's do a
test, and see if this way will work. We're going to do the test with the surface
tool. Under the surface, you have "sweep 1rail". So let's pick up this curve and
this two as cross-section, and make sure they all aligned. I usually like them
aligned in the middle of the ring, inside of the ring shank. Alright and
we need to make make sure we close the sweep, so we will have something like
this, and take a look if you like that, and if you don't, you can adjust it
At my point this is might be too tall for it, so I may need to reduce the
height of it. So it won't look like it is coming up too much. so I'm going to
delete this one. And actually it wasn't touching the point. That wasn't good.
What I mean is this need to be touch of this. No wonder it is too high. Okay, and
that will make sure it's not going way too much. You just need to have
it touch it a little bit. Alright so it looks good. I'm going to sweep one more
time under the "surface", you have "sweep 1 rail". This is your rail. This is your
cross section. and let's move the arrow inside and facing the same
direction. And don't forget to close the sweep. Alright now you have that one, so
we just need to take the look. If it looks good on both of them on it so we
want to mirror that. Let's do a test, and see how it looks. Alright so now you
have this over there. You can design bottom of the ring shank.
Sweep again with the other profile, if you like to do that.
I will leave it that to you. and also you can design some something like
cluster in the middle area. Or like the one I had, a big trillion stone in this
area, to fill it up. okay the second part I would like to talk about is how to
flow the stones on the top. I'm going to delete one of it, and I'm gonna use this
as my reference to do the stone to flow. Okay so I need to decide where my stone
is going to flow. I definitely not going to flow till the bottom of the ring
shank. so I wanted to flow somewhere until there. Okay I'm gonna mirror this
guy to the other side, and then I'm going to trim it off the bottom of it.
Alright so now I trim it off, I only need the surface on the top. I actually don't
need anything else on the bottom, so I'm going to delete anything I don't need.
Just won't get confused. Alright so this is the area that we are going to have
the stone on top of it. Alright the command we are going to use is "Create UV Curve'.
We're gonna create a UV curve over here, and as you see, it doesn't look
rectangular. They look a little bit like like pointed. Because when we are
cutting at the front view and the ring is actually split. It's kind of
having a curve. That's why you can see on the right view over here. It is pointing
on one side, so that's actually correct. It's actually going to help us to flow
it back. We will know the direction. Okay so the next step is we need to arrange
the stone on it. Alright, so I call out a stone is about 1.8mm
and if you want to know how I make this stone, you can go to the link
below in the description. I will have a link over there on my other video of how
to make a stone. So I'm going to move the stone to the position that I like.
It's better to have it right in the middle, so I'm going to use the align
tool, and we want to align in the middle. Alright so now this one is aligned. We
are going to design the prong. Let's go ahead to draw a prong roughly anywhere
about here, and let's go to the right view, holding the SHIFT. You want to draw
a straight line, we wanted to do is just simply piping. Okay so let's go ahead to
pipe this guy, and we can have it, kind of eyeball it, for whatever thickness what
we want for this pipe, and it would be something like this. This is really
aesthetic decision about how thick you wanted to have your on prong. However, you
don't want the prong to be cut too much. Usually you wanna stay as 30% of
the prong to maintain the structure, and for the better casting. Alright so
let's do a test, we are going to move the prong inside of the line that we have,
and we want to mirror that prong. Let's go to "mirror" to the other side, and see
how they look. Alright and then let's do
mirror one more time. This time, I want to do is to have that stone mirror to
the other side. Alright so this will be like how the prong is actually
holding. Let me enlarge the top view. This stone is not cutting
way too much. I will try to keep it 30% as possible, and this one as well now
if we move the stone out just a little bit, we can actually move the prong
inside of it a little bit. Alright so that give us a little bit room to the
outside edge. Your prong won't be filed off too much. That actually will look
better, so this will be a good position. so I'm going to delete one more time, and
try to mirror one more time to see how they look. You may need to do a couple
times to make sure that is the distance you want, and then we will have
this one mirror to the other side as well by using the midpoint here.
so this distant looked good to me. I'm going to have them... and the command
I'm gonna use is called "liner array". I'm going to
array how many of it? I'm not so sure. I'm gonna try more than I need. We're gonna
type it 15 here. And first reference point it's going to be the midpoint, and
we try to hold the SHIFT and come back a little bit here. So make sure that it's
really close to what we had, and I now have an extra stone I need to delete it.
Alright so it looks really well, we may need to have this one
kind of copy back to the left side of the first stone. And we did have too
much, so I'm going to delete one of them. Okay it looked like fitting into our
space really well. So I'm gonna pick up all my prongs and stones. Let's go ahead to
group them and let's do one more time is to align with them. This time
I'm going to use the center align, so that way right side and left side
will be equal distance. Okay next what we're going to do is we need to flow it
back, so let's go ahead to make that's curve into the surface by "surface from planner curve".
Alright so let's take a look on the perspective view, so you kind
of get an idea of where the prong is going to be. and let's flow it back the
command. We are going to use is transform. Under the "transform" you have
"flow along the surface". You're going to pick up the prong, and you're gonna pick
up the corner, and that's flow it... let me see.
Let's flow it back to this corner.
and sometimes you'll get something like this. I'm gonna keep it as a
tutorial right there. that mean our direction is not correct, so you might
need to try a few times to get it corrected. I was clicking on this corner to
that corner. Apparently, I'm clicking on the opposite corner. So I'm gonna try it one
more time here. Click on this corner, and this corner instead. So now it flows
really well, and we just need to double make sure that they are not
flipping or anything like that. Now our stone is on it, We no longer need the
surface, because that was just for the reference and I'm going to create
another layer, and put all the stones and everything into that layer, and temporary
just close it. Alright so the reason I'm doing this is because I need to redesign
my shank a little bit, because my shank was using a profile of this really
square looking profile, and that is going to make the wearer not comfortable. so
I'm gonna use that as a reference, and use the conic corners, and redesign my
profile. It's going to have a little bit round profile, and something like that. ok
so that look good to me, and I'm gonna make a copy from the mid point
of the bottom, to the mid point over there. okay so that way I will have a rounder
smoother corner, and let's take a look on all four views, and look okay to me. So
let's use the new profile to do the sweep .Going to the "surface", you have
"sweep 1 rail". You pick up your rail, and this time we want to pick up the new
profile. So let's go ahead to pick up a new profile, hit ENTER. Make sure that you
bring the seam to inside of the ring shank, and facing the same
direction, and let's go ahead to close the sweep. Alright, as you can see the
corner is nicer. It's not as sharp as that one, and we can bring back our
stones right there. Alright look really nice, and then we
can have them to pick up both of them and to mirror to the other side.
Alright so that is for the split ring and also how to flow the stones on the
top of it. I hope you enjoy the video, and again if you're interesting in any of
the model in the Rhino, and you'd like to know how to make it, please email me or
you can leave the comment below. So I can think about if I can find a way to
design a tutorial for you. Thank you for watching and I will see you next Monday