hello everyone welcome back to PJ Chen Design Channel. The other day I was
driving and saw this logo from Michelin, and I really think this is a
very cute logo, and I want to turn it into a piece of a jewelry. So here we go.
Inspired by a Michelin logo into a piece of earring. PJ Chen Design channel
is a channel about sharing Rhino3D knowledge to students and professional
learning various Rhino3D techniques. Are you ready? Let's get started!
Starting model this earring we will start with the ellipse tool, and we want
to go with the center, and I'm going to type in "0" here, and you can do whatever
size you want. In this case, I'm just eyeball it. and I am going to use the gumball to scale it
down at the same time hit ALT key, and then you will see the "+" sign, and then
that means you copied that one, and then I'm going to move this one up a little
bit and let me get it a little bit bigger, so something like that on the
bottom this will be bigger volume on the top is slightly smaller, and depends on
how much opening you want on this ellipse right there. At this point what I
like to do is move it down a little bit, and then I wanted to have the straight
line starting from the center. Now I'm going to use the polar array tool. Let's
go to the "transform" and you have "array" and you have "polar array" and depends on
how many bump you like to have, the center is "0". I'm going to try 20 of them,
and 360 degrees. So I get something like this, ok. this is going to be our
guideline for each of the bump, so what I like to do is
to figure out where's the opening. I may not need those three right here, and
going to use the last two, and trim off the top one. Okay, so now we have this is
going to be a good guideline for us to measure where is where. First one, I'm
going to scale it down a little bit and also make a copy. The second one from
inside I'm going to scale it up a little bit
approximately equal distant than the one we just make, so now we have those curves
that we can snap on, and since we only need to do half of them so the other
half we are going to mirror to the other side
so I'm going to use this one to trim off everything's on the left side, so we
only need to deal half of them. Okay now let's zoom in a little bit, what I
like to do is I need to create those bumps here. The command I'm going to use
is living under the "curve" tool, and you have this "arc" from start, end, point. so
make sure that intersection is on on all snaps so this
is the start point, this is the end point, and where in the middle, I would like to
snapping into the near so it will be near to this line that we created.
so let me turn those two into the red color, it's easier for you to see. okay so
I'm gonna repeating this method and we are going to creating those bump all the
way to the top. It doesn't have to be exactly right in the center as long as
it's not too off to the red line. that will be fine. so let's go again to use
the arc tool, start, end, point, and then you pick a midpoint
I'll be really careful I don't have this long enough to reach here what I like to
do....it's because we offset there, but we can simply.... since this is really tiny
we can simply just move the curve cross that line and if you want it to be
really particular, you can go into the curve tool and you have "extend curve" so
let's extend this curve from the endpoint and over. So as long as you got
this over, and that will be fine okay alright, so we want to finish the
very last one. let's go ahead to snapping into intersection again. Alright so
that's the first set the second set we are going to do that interior and we are
doing the same thing, so I'm gonna fast forward here a little bit, so you will
see it quicker
so those bumps we just created. It's going to be our rail for Sweep 2, so what I
like to do is actually select all of them, and select the one I don't need
it, those, and also this curve, this curve and this curve, and let's go ahead to
join them so now we have those two rail we just need a profile, so let's take a
look on our perspective (view). The profile is going to snapping. we're gonna use the
"arc" tool, then we're gonna snap into this point and this point at the front view,
and let's take a look on the right view to create this profile. Now you can make
it really bumpy, or you can make it shadow a little bit like what I did here.
Alright, so let's get give it a try and before we try, let's record the history
so we can change it later going to the "surface" under surface- Sweep2 Rail
you got rail1,rail2, and cross-section. Alright, so we got a pretty good
surface and then we want to take a look on the side, you can maintain the height so
it will be all the way the same height, but I don't think it's gonna look good so
I'm going to uncheck "maintain height" so It will go proportionately
lower and lower. Okay so if everything looked good to you, let's
click okay. so now we have this guy right here, all we need to do is to mirror to the
other side. The other side and join them together and that's.... it will tell you
you break the history, so that's fine and we're gonna mirror one more time from...
let's go to the mirror and go from this point to that point, and then join
it together. Alright so now we have this shape. Don't forget that on the very top
you still have a tiny hold there, what we can do to close up that one, we can use
the "patch" tool and we can patch this surface let's preview it. It will be a
very nice small bump there. Okay we're gonna patch on the other side as well
alright, don't forget to join them so they will be a solid piece, if you want
to print them. okay. once you have done the shape you can
take a look with the gumball, and see if you want to increase the
thickness to make it rounder, if you like to. We are not gonna build a mechanism
here because most of the time the mechanism is done by manually done by
soldering those finding, that is ready made already there. what I'd like to show
you is how to use a sweep 2 rail to make this form. I hope you enjoy the
video. and I want to thanks all my supporter, my subscriber, leaving comments
on my videos. That really helped me a lot and I hope you enjoy this video as well
please leave the comment, and like, and share my video. that's the only way I can
keep making free tutorial for you. Thank you for watching and I will see you next
Monday