Signet Ring Design in Rhino 3D (2018): Jewelry CAD Design Tutorial #40


One of my YouTube subscribers asked me
how to do the design on the side of the signal ring. Today I’m going to apply
this simple geometric form into a triangle shape design in this tutorial
on the signet ring. Hi, I’m PJ Chen welcome back to my YouTube channel.
this channel is about sharing Rhino 3D acknowledge to the students
and professionals learning various Rhino3D techniques. Are you ready. Let’s
get started! if you are interesting how to do the bezel setting, and also this bead
setting with halo ring structure, and also this signet ring. You can go to the
link below, and I will put the link there for my previous tutorials. What we’d like
to do today is to figure out how to put the design on the site, so I won’t go
over with all those details but you can find a links below.
Let’s going to the right view and to decide what is the area we are going to put the
design. I’m going to use the polygon tool and snapping into anywhere right in the
middle. So with this one, I’m going to set number to number 3, so I can have
a triangle, and holding the SHIFT (key) kind of give it a really align to the
construction plane. So I decided to have something around this size. Okay so what
we like to do is we need to figure out when this side is flat, and how this is
going to look like. I’m going to select my original ring, make a copy, and hide
one of it, because we will need it later on. Then we’re gonna pick up this
triangle, and to use the “trim” tool. We gonna trim the rest of it.
Let’s go ahead to delete all those extra surfaces that we don’t need.
We just need to have one there. To find out what is the area we’re going to put
a design. The next command we’re gonna use this “Create UV Curve”, and we are
going to create UV curve for this surface, and we’re gonna come out this.
The one that you are seeing as a rectangular is showing where the
original surface is, and this is our design area. So let’s go to the top view.
In the top view, I’m just gonna flip it. This is easier for us to see in this way.
I gonna move it on the side as well. Let’s enlarge the top view, and we’re gonna do
the design in this area. So first things I’m going to do is to design my pattern.
And I gotta have very simple pattern. It’s going to be like this. I gonna turn on
my grid snap, and I’m going to snapping here you can always changing the pattern
size later on. So I’m just gonna do something really quick. Something like
this using the “arc” tool to create this pattern. Now if I have this. I’m just
gonna quickly to join it, and I’m gonna make a copy going from this side, to this
side, to this side. Alright and to make it in wider. I’m going to copy from this
going to the top. So this become my basic pattern. Alright I’m gonna move this from
the center to the center over here. Apparently the pattern is too big, so
what I’m going to do is going to scale down using the 3D scale to bring it down.
Something like this. Okay ideally we try to avoid like a very pointed
design there, but we can also scale one more time, if we need it. This is close to
the size that we want. Now, we have the pattern we will need to create a
thickness of the pattern, so I’m simply going to use the tool. The command is
called “offset curve” and this is the time I’m going to offset for the distance.
Distance right here. I will change to 0.35 and I want to do both side, so that
give me the pattern like this. Okay so that give me the thickness, in this case,
the thickness will be 7 millimeters. Since I was doing 0.35 on each side. Okay and I’m going to use the “copy” tool starting from this
point to all the rest of them. You’re gonna see a little bit overlapping.
That’s alright. This is actually what we’re looking for, so we can trim them. We
no longer need the center one. That’s just for the reference for us to find
the thickness. So I’m also going to group them, and also hide this.
So now this is the area we are going to design. So I’m going to select all of
them, and I’m going to trim whatever in the middle. So that means those two will
be gone, those two as well, and basically what we like to do is create a cutter, so
we need to get rid of any things in the middle. You’re gonna see something
like this. Alright so I’m going to group them. It is
easier for me to pick them. You kind of see there’s a little bit cross looking
thing and this is more like a inverted hexagon over there…. will be our cutting
tool. We also want to make sure, it’s not over, you know, the area we are going to
do. So I’m gonna pick up the triangle. I gonna use the trim command again. This
time I’m going to trim off the area over here, and here. So now they become the
individual cutter. It may take you a little bit time
to figure out what is what. That’s okay. and try not to have this is. Very
important here. Try not to have those little things over here. Even though
you sacrifice design a little bit. Because that is gonna be too small. It’s
hard to see. So we try not to have those little things hanging on the edges. It will
be hard for casting, so I think I’m missing one more is this guy right
here. Alright so this is our design try to check one more time. There’s no little
piece hanging on the edge. So this will be our cutter. I’m going to join all of
them, so they become a closed curve from each of them. Okay now we’re gonna pick
up those, and we’re gonna decide those cutters. How thick they are going to
be. So I’m going to use the command. It’s living under the “solid- extrude a planar
curve- straight”. So I gonna have this one here. Alright this is a showing like
how thick you want them to be to cut, and also depends if your ring is hollow (or not)
so now we need to flow all this forms back to the original triangle area. We
need to use the “flow along the surface” command. We will need to have a surface
first. So let me turn this triangle original triangle into the surface by
“surface from planar curve” and once the surface is done, right there. I’m going to
turn it into the red color. Okay so this will be the area reference
surface to the original surface. So let’s go to the transform and you have
“flow along surface”, and we’re gonna pick up all this object, and we’re gonna pick
up this corner on the surface. On the target
surface, we’re gonna pick up one corner as well, and you can see they are coming
is exactly the depth, compared to the reference surface. Okay so now let me
turn them into the red color, and bring it back to our original ring. So we will
have something like this. Before we do the boolean, I would like to have this
one mirror to the other side, so now we have something like this. Okay, let me
hide this triangle surface so it will be easier for us to see. Okay now we need to
do the boolean difference, if the design is really complicated, you want to do one
side first, instead of both sides together. So now we have that side
cutting, as you can see cuts through all the way, since my ring is hollow, so the cutter doesn’t have to be too deep. So I’m gonna do one more time
to cut on the other side. Alright so now we have this. It depends on your design
what you can do also it’s putting a triangle area, the border, on it. It looks
like hand engraving so I’m going to bring it back to that little shade there.
because we do need to use the curve. The command is “DUPboarder”. You
can also use a duplicate edge, but in this case, I would like to use a duplicate
border. I’m going to hide this surface again, and we’re gonna pick up this one.
This curve. Let’s use the “pipe” tool, and I set the radius for 0.35 and take a look
on how it look, and if you like the proportion, and if you do, let’s go ahead
to do all three of them. So now you will have the bolder look like this.
If you like to have it being cut it out You can also do is using the “boolean
difference”. This out of all three. So this surface, this one and the one on the top.
Let’s take a look on the render view, so that will look like this. Or you can keep
it original. That’s for our tutorial today. I hope that answered your question
how to put the design on the side of the signet ring. Please like and comment and
share my video if you like it. Thank you and I will see you next Monday!

22 Replies to “Signet Ring Design in Rhino 3D (2018): Jewelry CAD Design Tutorial #40”

  1. hi pj, thanks for your videos! i ve a question: when i try to flow along surface i can select only half of the triangle (as also when i create the UV curve), resulting in a mess.. thank u again!

  2. sorry for bothering u again pj, but something is still wrong with flow along srf comand.. it seems like it flows all aroud the ring surface.. did u create the ring on the tutorial with the curve network? how did u put only one seam? thanks

  3. Can you please sir make a complete tutorial of how to make different type of signet rings? It would be very helpful for me and shall be grateful to you…. Thank you and waiting for your tutorial video. Please tag vide- my mail id- [email protected]

  4. Hello, PJ. I'm also having the same problem with CreateUVCurve command, it selects only half of the surface and I don't know how to fix it.

  5. I’m having a problem, after I extrude the design, I don’t have my original triangle curve all the way around the design as you do, I have all the gaps inbetween the design as trimmed out earlier. Therefore when I try to create a surface to flow along it is not possible. How did you keep your full triangle curve around the design?

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