Jewelry CAD Design Tutorial #25: Engagement Ring Design in Rhino 3D (Part II)


Hello everyone, welcome back to PJ’s CAD
class. What we did last week was making the prong and the basic shape of the
ring, so let me turn on what we had last time, and let me turn this off. Alright,
so this is what we have left from last time. Let’s go to the ghost view.Today
what we like to do is continue to build the bead setting all the way around this
ring shank. Let’s get started. For this engagement ring model part II, we would
like to have the small stone for 1.2mm How to make this
stone you can look at my previous video a right top corner with the info icon
over there now you can find that video or go to my channel, you will find the
video for how to make a diamond. Alright for easier for us to snap on a lot of
things because this is a mesh. and it’s hard to snap on a lot of
things, so I usually will do the command it’s called “mesh online” and for mesh
online you click on any of the mesh and hit ENTER, and it will give you the outline
for exactly what you are looking from the view. In this case, it’s the top view.
so I kind of give it some sort of around its shape it’s easier for us to snap on
things Next we are going to make those little
beads what you can do is using the “pipe” creating the curve and using the pipe on
it. or you can use the cylinder in fillet the edges. This time I am
going to snapping into the end point this is 1.2 mm so
I’m going to use the radius for 0.25 which is diameter 0.5 and how long do you need it you
definitely need it you can have the bead long enough to get
it into the ring shank, but not over the ring shank. Alright, so we wanted this
bead a little bit higher so your jeweler were able to set it. You also
don’t want it to be too cutting into too much. Alright,
so let’s go ahead to fillet edges on this one. I’m going to use the “fillet
edges”. It’s living right here, and then let’s choose 0.24 (mm). It’s a little
bit smaller than our diameter so it will have a nice surface, and then let’s
image that we’re going to have this stone roughly about here. The best
distance is you will have it about 0.1-0.15 mm. Okay,
and then so what we are going to have let’s say if we have a stone right here,
and our prong which is going to share this it’s going roughly about right
there alright so that look nice to me. What I’m going to do now is, if the prong
look nice where whatever the position is you’re going to use that to mirror to
the other side, and use that to mirror to the bottom. Alright so the goal is….
we are going to do is having those prongs…. let me group them temporary, and
then we are going to almost setting more like this way. and they will
continue follow the ring shank so that’s the ideal
we are going to do. So let’s go ahead then turn on the ring shank and
let me move our stone to the side so it’s easier to see. Okay take a look
on the perspective view. Alright so the goal is… we need to have a stone place
over there for the first one, and flow along the curve, right? but we need to
find the curve first, so we need to find the center of this… the curve on the
center of this surface,. The command you’re going to use under the “curve” you
have “curve from the object” and you also have the the one for “extract isocurve”.
Alright, it will pick up the surface Right now you see this a line
moving while my mouse is moving. I want to snapping into the quadrant.
if yours happen go in this direction, all you need to do is go to the command bar
right here, “toggle” you can toggle it back to different direction , so I
want to snap into the quadrant where it’s right in the middle. And the reason
it doesn’t go all the way to….. it doesn’t go all the way to the other sides
because last week we split this ring shank in half in order to get rid of the
surface right there on the mide part of the ring shank, so now we have
the half of it. And all we need to do is kind of mirror it to the other side.
I gonna type in “0” and mirror there. so once this mirror, I’m just going
to join them. let me turn them in to the other color
so it is easier to see. So now that red color curve is right there, so our goal is
going to be….I no longer need that line. Our goal is going to be a arrange this guy.
we have to look at all three different views. I’m holding the SHIFT (key) so they will
turn in 90 degree and I’m gonna send them right there. We kind of need
to follow the curve so I’m going to make them sit a little bit lower there.
Alright, and then to do the flow Alright one thing I haven’t do is we
need to make the cutter, but I just want you to see how it goes before we
actually go ahead and make the cutter We need to make sure that is closed
to the center. Alright so let’s give a try before we actually making the cutter For easier modeling I
usually in this in the scenario I will turn on the “record history” and then we’ll
go into the “transform” and then we’ll go to “array” and you have “along the curve”.
Okay so the object you’re going to array is whole set Enter and then you
hit this curve it will ask you how many you want and I was trying for
23. Let’s try it one more time. So you have the stone flow all the way
around and they kind of not line up that’s why you need to turn on the
history because what you can do is you can kind of move this up a little bit
and then so let’s take on the right view so make sure they will aligned.
so right after you get that you probably don’t need the very bottom one, so you
can do is it’s to delete that one. So we know 23 will work so that
will work on one side however if you send this one it really depends on the
size of the stone if you set on this one sometimes you may happen is the
stone is really dark. So usually we want to punch a hole behind a stone. so
we kind of need to make a cutter. so I’m going to redo redo all the way back to
the center. Alright, okay so how are we going to make the cutter. (there are)two
reasons you want to make a cutter. First, It is going to make your stone looks
brighter. Second reason, it is easier for the stone setting so if you already pre
make a seat Alright, so we have this right here. I’m
going to move it higher than my girdle and I gonna holding…. I’m going to drag
it and holding the CTRL (key) then you are creating a surface there. Alright this is not a very good surface I should do this way okay we need to starting from this point
let me go to the top because the line that I draw if you zooming is actually a
lot of points, and we want to reduce the point for having a better model. so I’m
going to do is to draw a circle, and our diameter was 1.2 mm
okay so I have that curve I’m going to use that curve and bring it up a little
bit over the girdle. let’s go to the perspective view I’m
going to move this down with the Gumball the blue arrow and then hold my CTRL (key)
and you can see a ghost line there and what it does is you are creating a
surface. okay so let me do again I’m going to move it down an arrow to
somewhere it’s just a little bit below the girdle, and hold my CTRL (key)
then I creating that surface. okay and I’m also going to put a dot right at
the center, and with that dot I want to move it close to the bottom of my stone.
So we are going to use the surface tool. You have one is from extruded “from the
curve to the point” so the curve we want to extrude is the edge of that surface
we just made, and you will go to snapping to the point. Alright so now we have
this one and also this one. We are going to join
them and also “cap” them so they will be solid. I’m going to turn it into the red
color. alright so this is a cutting tool that is follow the bottom of the ring
shank, I’m sorry bottom of the stone and we’re also going to make a cylinder
snapping to the point as well the cylinder is going to cut through the
metal that is sitting on the top of it usually you want to do is about 50% so
I’m kind of eyeball like how big is it and I want to make it longer, so I will
have definitely have enough to go through the ring shank. Now I’m going to do
is boolean those “boolean unit” those two. Alright so now this is the whole
set that we are going to flow. Let me move this one. We no longer need the
curve. I’m just gonna delete it. Alright so I’m going to group them and move it
to move it you know on the side and turn on my ring shank. Alright so let’s go
back to what we were doing almost, I think this is exactly the same. Alright
so we’re gonna go into the front view move this one here, coming here, coming
here, alright. And let’s take a look…. my isocurve is disappeared, so let’s do…. go to
the “curve”- “curve from the object” and you have “extract isocurve”. I’m going to
extract that one to make sure snapping to the quadrant. You can extract one more
time snapping to the quadrant that will work too. And then pick up both curve and
then you wanted to join them. so we are going to use this one
that’s move it to almost the middle and bring in a little bit
that’s enlarge this one and you want to make sure that they follow the surface
okay and then we’re gonna use the same command, turn on a history “record
history” I will go to “transform” and then you have
“array” and then you have a “array along curve” so let’s start…. we already picked
the object, and let’s pick the path, we were using 23 so we’re gonna use 23
again. Alright so that’s what I mean that all the red parts, which is your
cutting tool, will be longer than the shank. Alright so let’s move…. make sure
that we have even number not even number even looking on the shank. I’m gonna move
this one just go up a little bit and make sure that they align. Alright now
on the very bottom one “ungroup” them we don’t need this one, we don’t need this
one, and we still need the rest of it. okay now you’re looking really good and
that’s don’t forget to “ungroup” them. what we need to do now is we need to trim
them or “boolean difference” them so what I like to do is to mirror all of them to the
other side okay and then we want to use the
“boolean difference”. Let’s “boolean difference” from the ring to all the red parts let’s do half first. if your computer is
not super strong and you have so many different small parts, it may crash. so
let’s do the boolean difference on one side. It will say the boolean difference
will break the history because we have history, which is fine. Alright so now
we have that one and then we are going to boolean difference again with this okay Alright so now we have the stone on it
and you also need to boolean the little prongs to the ring shank. Let’s take a
look on the head let me delete this one. Alright, so this is how we arrange the
stone on it, and sometimes if it is getting too closed you might need to move
before you boolean you may need to move them in a little bit on the top
individually. Alright this is the engagement ring with a six prong head
and bead setting on the ring shank. I hope you’ll like it. Please like and comment
and share my video that really helped me ranking. It’s really hard to continue
without your support. Thank you very much I will see you next Monday

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