www.5xj.com rhino_tutorial

This ring has one large emerald cut stone bezel set with the long axis of the stone crossing the finger.
The stone will be rotated and positioned when the ring is extruded.

The first thing to do is import
the emerald cut stone model.

I downloaded this stone model
from 3dlapidary.com.

This is an excellent web site and
has lots of intersting information.

The emerald cut stone model is
approx .70 x .33 x . 30 mm's
and the blue topaz stone measures
11.11 x 9.00 x 5.96mm.

There are numerous ways
to scale objects - for this example
I'm going to scale the stone
model one axis at a time.

In Rhino: Transform, Scale,
Scale1-D, and mouse left-click
on the stone object

Press enter to accept the object
selection and type 0,0 for the origin.

Now enter the scale
factor 15.870 (11.11 / .70).

Move and left-click the mouse
on a positive x-axis location
to scale the model.

Scale the Y-axis:
Transform, Scale, Scale 1-D,
mouse left-click on the stone object.
Enter 0,0 for the origin
27.27 (9.00 / .33) for the scale factor
and click on the positive Y-axis.

To scale the stone object on the Z-axis
change the viewport.
View, Set View, Right.

Scale the Z-axis:
Transform, Scale, Scale 1-D,
mouse left-click on the stone object.
Enter 0,0 for the origin
19.87 (5.96 / .30) for the scale factor
and click on the positive Z-axis.

To change the display to 4 viewports:
View, Viewport Layout, 4 Viewports

To Zoom the stone object:
View, Zoom, Extents, All.

Finally save the model as
StoneRing1.3dm.

Change the layer name
from 'default' to 'stone'

Edit, Layers, Edit Layers...
Right click on 'DEFAULT'
Rename, and enter 'Stone'

There are lots of settings
for rendering and frankly
they can be very confusing

Much of the confusion comes
from different settings for
different types of displays:
Wireframe, Shaded, Ghosted,
X-ray and Rendered.

To set the Material
Properties for Rendering:

Edit, Object Properties... F3,
left click on the stone,
select Material
select Basic
set the Color
set Gloss Finish
and set Transparency

To set the rendered
background color

Tools, Options...,
Rhino Render,
under Render Colors
click on backgrond
and set the color

Now to enable the render settings:

Tools, Options...,
Display, check
Use Render Settings

right click on 'Perspective'
and selcet 'Rendered Display'
or Ctrl+Alt+R
To turn on rendering

The rendered stone model.

Save the model.