Hello everyone welcome back to PJ Chen Design channel. Today we're gonna talk
about this request from YouTube subscriber Ron regarding creating this
puffy checkerboard design on the ring shank. Are you ready, let's get started!
I got an email from YouTube subscriber Ron sent me a picture of this one and
showing me this is the ring that they did in the shop and it was hang carving and
would like to know how to duplicate this ring into the Rhino. So we are going to
talk about the detail of how we get this checkerboard design. First of all, we are
going to create a cabochon stone and for whatever that size is. Since I don't have
size I'm just gonna make it up for whatever gonna look good for this design.
What you can do is you can make a sphere cut it in half and kind of like
1D direction (scale) to make them into the size that you want. Then we are going to
the front view, and then we need to draw a profile for it. Let's go ahead with
draw our ring size. The ring size like usual. I'm going to set it as a 16
millimeter, and we need to draw the bottom of the ring shank for whatever
size and thickness that you want. I'm just gonna roughly do about two over
there, and then we are going to draw a line right there. Alright, from this arc
at this point the better looking curve is gonna use the "Curve-extended curve"
then we're gonna do from arc to point.
We're gonna do one more time. Again, from this side to the point right there.
so it's kind of giving us really nice puffy outline there. Let's take a look on
the perspective, so now we have this, I'm going to use the commands to duplicate edge
and to duplicate the bottom of the stone. then that will be the profile on the top
in fact I probably need to make this a little bit bigger. Because the stone need
to be somehow to sitting in there, so let's say that would be the stone, and
then to creating the surface for this ring shank, we are going to split this
one with the point on the bottom. Okay, so now we have two curves right there. You
probably will guess we are going to use its the "Sweep 2 rails". so this is your
rail 1, rail 2, and you get this cross section. And then you got this one here.
So this is the surface we are going to deal with, and have a checkerboard
on it. Let's use to "Create UV curve" command. I've been using a lot of my
demonstration. It is really useful command right there. We're going to go to
the top view, and let's take a look at this one. Depends on the size of the grid
that you wanted to have. I'm basically going to do something like this. Let's go
ahead to create a 2.5 millimeter by 2.5 millimeter square. Okay, and let me
create a surface by "Surface from planar curve" to make this into a surface.
If we turn on the control point, we're gonna notice it's only 4 point there,
and we cannot edit much there, so I'm going to rebuild this guy, and let's do
5 and 5. Let's preview it, so there are some points for us to pull it.
and we can click OK, and then, I want to do is bringing up
this point with the Gumball and point up. If this is still too flat on the
bottom, and that that's not the way you like, make sure when you rebuild you
might want to rebuild, instead of 5, you want to do 3 and 3. Okay so
that way when I kind of pull up this point right here, it will give me not as
flat to the bottom. So this is the surface that we are going to use. Looking
at the side view, and see how bumpy that you want it, and then you can make it
more bumpy if you want to. Okay, so that is one of the element that we have and
I'm going to move that one from that point to that point. Now we need to
duplicate it by using the" rectangular array", and I'm going to do X for lot more
than what I need. I gonna do 30 as well, okay and then we're gonna
do from here to there. The reason I need a lot more is if we're
looking at, if we're looking back at the design, it is not straight down the
checkerboard is actually rotate 45 degrees. We need a lot more space to
cover that. If I'm going to select everything that I have here. Let's
group it. Okay and then what we wanted to do is rotate it 45
degrees. Alright so now it's become like this. I'm going to move this from this
point, and to any of the point that is snapping into the end point. The key is,
once you flow it back, you need to have them aligned perfectly. First of all,
we are going to move those two points. We're gonna move from this point to this
point. Okay and then so the left and the right will be matched. Second
thing we wanted to do, we need to make sure top and the bottom is matched too.
So we are going to move this point, and this point down a little bit. Let's
move it from here end-point to this intersect there. So now they
all matched. We don't need the rest of them. Let's select all of them and
hit "join". So they become one piece. We are going to use the "Trim" command.
Let's pick up this one, and let's trim the rest of it. So now everything is
fitting into there. Let's take a look on the perspective. Alright, so we have
this one over there. Let's do a first try to flow it back to the surface.
We need to have the base surface by the one that's on the bottom. So let's make
it into the surface over there. And I'm going to turning into the red color.
It's easier for you to see. Okay, what happened if I flow this one back to this
surface. We're going to use "Flow along surface". We're gonna pick up our object
first, clicking on one of the corner, and going into one of the corner there.
So now it look nice over there but there's a problem here.
If you zoom in a little bit, you're going to see this one is flare out here. If
that's the design, that's fine, but let's take a look on this image
right here. The image that we have. This top triangle is actually puffy but in
the half way. so it's kind of perfect getting into this oval shape, so we try
to match that triangle things there. With this flow, we know it is successful
has a checkerboard in this way, but we need to edit that a little bit. So let's
delete this surface, and let's come back over there. Right here that we
have all of this triangles they need to come down a little bit. So we are going
to come over here, and I would like to explore it this one. So now they are back to
individual square, and we're gonna pick up this edge right here. Pick up all of
them on the edges of the triangles we're going to manipulate. Okay so the
command that we are going to use is called "Cage edit" and we want to choose
the bounding box. Alright, we want to align to the world, and XYZ for four of
them is fine, and then all of a sudden we'll get something like this. If you
look at my front view, if I enlarge, they're going to look like this.
We're gonna come over to the front view, and we're gonna pick everybody on the
edge here. The goal is make them flat to the construction plane.
I'm going to use the commands called "Set point" S-E-T-P-T and then we're gonna come
over here, and we're gonna click okay. and we're gonna going into the very bottom
end-point right. So all the sudden you see this is kind of closing down there
like that. So if we flow this one, it
should be much much better. The other things that we have is on the bottom
right here, it's really bumpy and in fact, we don't need that many
bumpy to the bottom of the ring shank. and then they're coming in to the point
this doesn't look really nice. So I will suggest to do like just like
half of them. After I have is kind of slightly blending into the ring shank.
Let's see how are we going to get that one. We are coming back to this one here
and I mean move it a little bit closer. It's easier to zoom in like this okay.
We need to have those starting from somewhere about half, and it's gradually
change and blend it to the bottom completely flat. So we need to make
all this bump flat there. Let's use the same command
it's called "Cage edit", and we select this one, and then we want to do the bounding
box, align to the world, and point 4,4,4 is fine, and
then we will have something like this. I have 4 points on the X, 4 points on Y,
4 points on Z. Okay, we want to pick up all of this
the bottom half of a ring shank over there. Okay and let's coming to the
front view, and then we have something that's selected right there. We want to
use the command again "Setpt" set point, and again we want to set it at a Z.
Because we are at the front view. okay so let's bringing down to the end
point here, so you can see the pattern is gradually changed to the zero there.
So you should flow nicely this time. Let's do one more time going to the
transform flow along this surface, we're gonna pick up this one here, and pick up
the base surface, and we're gonna pick up the target surface. Alright so now we
have this one. Let's take a look on the render view, and we still see those line
in the ghost view but let's take a look on the render view, and see how they go.
alright so they do come in down to the button and the slightly gradually
disappear. This is what we are looking for if you do like to to change
a lot more maybe you want to create on your cage edit, instead have 4 point on
the X. You may want to do 6 point and so you can kind of have better control
of how you want this patterned disappearing. Now we have this we need to
close it up. A lot of times when you have flow along the surface ,even the edge that
you have it really really nice it's completely matched. You always will have a
seam over there so we want to go to the analyze and edge tool and show edge, and
then we're gonna click on this one. Let's take a look in the detail. A lot of time,
what you're going to facing is that's where the seam is, also
when you have a lot of things coming to the button and it'll come in to one
point and that point usually cause the issue so we need to try to avoid
that few things I would like to share my little trick with you. We're going to
delete this one. We're gonna do one more time first of all to avoid all the point
coming into one point on the button like what we
see there. That usually caused some issue so what I like to do is I'm going to
pick up those two points, and just move it out a little bit so that way when we
flow it back there will be a hole on the bottom. It won't be coming in to one
point, so that way will help a little bit okay so let's do one more time.
Let's flow it with the "Transform- flow along the surface" and we want to pick up
this object, enter, click on here, and go into the target surface, and we want to
click it there, so now we have this one here. Let's do one more test at the
object, and we kind of see we have a clear opening, clean opening on the top. We have
a seam right there and we have a hole on the bottom. It's much easier to fix this
hole compared to all everything coming to one point. So what we gonna
do is my little trick. I'm going to explore everything and then join them
back.So that is kind of join those seam right there, and only thing I need
to do is top in the bottom. So I'm gonna go into the front view the one on
the top is should be flat so we are going to use this "Surface from planar
curve", and we are going to select everything on the top, and we hit enter
then that will create a surface there, so let's go ahead to click on this surface,
and this polysurface. Let's join them. then you don't have the naked edges there.
Now let's try to fix the one in the bottom. The one on the bottom again use
the "surface form planar curve". We're gonna pick up this one, this one and all
of them.
Then we'll come up with this surface and we're gonna pick up this surface and
Let's join them together. Let's go ahead to click on this object, and it says
"closed polysurface" and let's add the object, just wanna double check. It says no
naked edges. so right now, it's it's good for us to do the "boolean difference"
We're going to pick up this curve right here for our ring size, and we are going
to the "solid- extruded planar curves- straight" like this, and we will need to do the
boolean difference, pick up the one you want to keep, and this is our cutting
tool. so then we will have something like this, we can turn on our stone. that is on
the top. Let's take a look on the ghost view.
so that will be our ring today. You can go ahead and do the bezel and to hold
the stone. Today's video is a little bit long, but I just want to make sure that I
touch all the points for this ring. I hope you enjoy. Please like and comment
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video. Thank you and I will see you next time.