Twist Engagement Ring Design With Bead Set In Rhino 6: Jewelry CAD Design Tutorial #74

Hello everyone. Welcome back to PJ Chen Design
Today we’re gonna work on this engagement ring have this kind of wavy
design on the side with the bead setting. Are you ready? let’s get started! We are
going to start with the center stone It is oval. It’s around 6mm x 8mm, and I
have a video in the description below, if you want to know how to do the prong set
in 3d model. But we’re gonna starting with this setting in the middle for our
reference. So I’m just going to hide it and then we are going to set it a ring
size. The diameter for the ring is about 16 millimeter. At first, we need to edit
this circle. There’s not much of an edit point right here, and then they also
creating this kink right there. So what we want to do is we need to rebuild this
curve. Let’s rebuild it into the point count for 8, degree for 3, and this is
what we get. Once we rebuild it, we are going to pick up this point and this
point. They are going to move it to the right. Let’s say 3 millimeter, and then
the one right in the middle there, I’m going to move it back 0.3
millimeters, so I get something like this. Let’s go ahead to create the
profile. I’m going to create the profile right here. Snapping into the
quadrant and the high it’s about 1.5 millimeters, so I’m going to have 1.7
millimeter and wanna give it a little bit round corner there. So this is
what we have. Let’s move it back to the center by align to Horizontal Center, and
we also want to make a copy to the other side. Alright so now, we have
everything ready, we need to create two more profiles there. One in the
middle, the other one at that 45 degree. So let’s go ahead to use the rotate tool.
Let’s snapping over here and type a 45 and another one, type in 90. So we will have two additional cross sections there with this
one let’s go ahead to move it close to where that rail is going to be. The same
one in the middle, I’m going to move it to close to where the rail is going to
be. Let me hide this one, so it’s easier for you to see. The reason we want to
have that 45 there. It is because one side is going to be higher than the other
side. So I’m going to do is using the 1d scale, I’m going to scale this up just a
little bit doesn’t have to be too tall. We just need to have a little bit more
definition there. Okay so let’s go ahead to use the Sweep 1 Rail. This is our
rail, and the rest of these are the cross sections. Make sure everybody’s aligned. I
usually like them to align in the inside of the ring shank, so that way I can
avoid to have a seam on my design, and make sure they are facing the same
direction. also close to sweep. So now we have something look like this. This side
look a little bit fatter. We want to do a test. Let’s go ahead to rotate that piece,
and make sure that copy=yes so then you will get this one. As you can
see. Let’s get take a look on the render view like one side is higher than the
other side in a meeting right in the middle over there. So I’m not happy with
the bottom. Look like a butt looking thing, but we can fix that later on.
Let’s turn on the stone, and see how’s everything work. Now
everything is working fine. We just need to put the stone there, and redo the
bottom. So I’m going to do is to draw a straight line, and using the straight
line to trim the surface right there. Now I have something like this.
I’m going to pick up my curve on that profile, and then we want to make a copy
by using the Rotate, copy=yes. Let’s make one to the bottom. So now we have
something like this. We’re going to use the surface tool, Sweep 1. We’re gonna go from rail, cross-section, cross-section,
and the the last cross-section, and make sure they are aligned to the middle, and
then, we can create its shank. Let’s take a look on the render view, so it comes
into one shank instead of two. Now let’s go ahead to do the stone. To do
the stone, we need to know where the stone is going to be. So I’m going to use
duplicate edges, and we’re gonna duplicate this edge right there. Let’s move it to
the other layer, so it’s easier for us to work on it. This is the curve that we
have. We don’t need the whole section there. I’m going to split that curve to
the point, where I think the stone should stop, and then so we can delete the other
half. Okay so this is the curve that we have. I need to know how long is that, so
we’re gonna use the command called Length. It’s 13.128.
So on the top view, I’m gonna come over here to draw a line13.128. This means if this curve is to stretch it like flat, the flat surface
this is how long it’s going to be. So I bring the stone that I made before. If
you want to know how to make this stone I will including the video in the
description (below), Let’s take a look on the top view, I want to make the two stones
next to each others, and then I’m going to draw a straight line at the front view
approximately something like this in the middle. This is going to indicate
where the prong is going to be. We are going to pipe this one. Make sure your
prong is big enough to cover both of the stones. I will say you will cover about 20
percent, so now we have something like this. Let’s just go ahead to mirror to
the other side, so then we’ll have the prong on both sides. I’m going to delete this one. Let’s go ahead to use the Linear Array,
and we are going to go about 10, because I don’t know how many do I need, and
we’re gonna go something like this. You want to make sure that it’s equal size
on the prongs. Both side of the prongs and then you got something like this, and
apparently, I have more than what I need so I’m going to delete one of them here. Okay,
I also need the prong on the other side, so I’m just gonna move it over here, and
have something like this. So this is the arrangement that I have, and we are
going to have this one flow back to this one. So I’m going to pick up everybody
beside that curve, and we are going to use the command under the transform, you
have flow a long curve, and the base curve will be the curve over here. The
target curve will be the curve over here. This is what we have.
Let’s turn on the ring to see if that fits. right so you fillet nicely. Once we have
done that, you can still adjust it, if you need it, and then we can come over here.
Just pick up everybody again, and let’s go ahead to rotate our stone, and make
sure copy=yes. Center to the zero, and let’s move it to the other side, so
double check the stone flow nicely. This edge of stone is not hanging out. The
prong is touching both sides of the stone. All we need to do now is to trim
the extra once. Everything is trimmed, so and trim the one in the center. If
you like to know more about stone setting. I have a stone setting course
online. I will put the description below. check it out, and let me know if you have
any question. Thank you for watching. I’ll see you next!

Michael Martin

16 Responses

  1. Amazing Pj . I have never seen a shank like that built so fast and easy thanks for sharing ur knowledge your the best !!

  2. PJ Chen – вы лучший! Совсем недавно начал смотреть ваши уроки и в полном восторге. И хоть я плохо понимаю по-английски, но по субтитрам и подсказкам все легко повторить. А самое главное, это ваш метод построения. Вы за 15-20 минут доходчиво объясняете то, что в других подобных видео и за час не сделают! Успехов вам!

  3. I just spend hours and hours on the exact same ring trying to get it right for a customer last week only to see how easy it could have been . lol thanks for a great vid again 👍

  4. Hi, many thanks for video but i try to work with function gems flow on curve but it isn't working smooth like your video. Please advice.

  5. Pj Chen Thank you for this helpful tutorial!I want to know what 's difference between [flow] and[_Array] , when I use [flow] at this model u ever teach(, I found that the diamond and prong would be distorted.

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