dt3Dheader.png

Rhino Tutorial: Curve Basics

Approx Completion Time: 30 min
Goal: Learn many of the available 2D curve tools + Learn about Osnap

What you will draw:

Mac Instructions

Windows Instructions

Open Rhino and click Show Templates on the right

Open Rhino and click the New Tab at the top

Scroll down in the template menu and choose

Small Objects - Inches

Scroll down in the template menu and choose Small Objects - Inches

Let’s turn on a modeling aid.

Now you will see some information next to your cursor as you use most tools.

From the menu at the top, choose:

FILE > PROPERTIES

Under modeling aids select Cursor Tool Tips

Check the boxes above and click OK.

This entire tutorial will be created in TOP view.

Double click the word TOP to focus on that viewport.

Each tool has many variations. Click and hold the rectangle tool on the left hand tool palette

There are many ways to draw a rectangle. In this tutorial we’ll use:

 Rectangle: Corner to corner

 Rectangle: Center, corner

 Rectangle: Rounded rectangle

Other places to find the same tools: You can type into the command line

or you can find them from them in the Curve menus at the top of the screen.

Before we start drawing, let’s talk about Osnap.  Osnap is short for Object Snap.

The Osnap menu allows you to choose from a list of ways that your cursor and shapes will snap together as you draw. You can select one or many as you draw.

Your Osnap panel is on the left

Before we start drawing,let’s talk about Osnap.  Osnap is short for Object Snap.

The Osnap menu allows you to choose from a list of ways that your cursor and shapes will snap together as you draw. You can select one or many as you draw.

Your Osnap panel is at the bottom.

For now, let’s disable all Osnaps and enable Grid Snap (at the top of the screen)

Turn off all other buttons at the top of the window.

For now, let’s disable all Osnaps and enable Grid Snap (also at the bottom of the screen)

Turn off all other buttons at the bottom of the window.

Rectangle Choose:

Draw a 1” x 1” rectangle by clicking on the Origin point (x0, y0) 

and dragging to the first major grid line intersection (x1,y1).

Rectangle Choose:

Draw a 2nd 1” x 1” rectangle by clicking on x-point 2.5 and y-point 0.5, 

then dragging to and clicking on x-point 3 and y-point 1

To put this into context:

The far corner of you second rectangle is 1” above the origin point and 3” to the right of it.

Rectangle Choose:

Draw your third rectangle from

x-point 4 and y-point 0 

to

x-point 5 and y-point 1

when you click to set the 2nd point,

you choose the radius for your rounded corners.

type 0.25 and hit enter

TRICK: if you make a mistake in the middle of a tool, hit ESC

Now for some Circles.

Circle Choose:

Draw your circle from

x-point 6.5 and y-point 0.5

up to

x-point 6.5 and y-point 1

Circle Choose:

Draw your circle from

x-point 8 and y-point 0.5

to

x-point 9 and y-point 0.5

Now for some Ellipses:

Choose:

Draw your ellipse from

x-point 11 and y-point 0.5  to

x-point 10 and y-point 0.5

drag height to

x-point 11 and y-point 1

Ellipse Choose:

Draw your ellipse from

x-point 12 and y-point 2.5 to

x-point 10 and y-point 2.5

drag height to

x-point 11 and y-point 3

 

Arcs are next

Arc Choose:

Draw your arc from

x-point 8 and y-point 2 to

x-point 9 and y-point 2

and drag arc up to 90 degrees.

 

Arc Choose:

Draw your arc from

x-point 6 and y-point 2 to

x-point 7 and y-point 2

and drag arc straight up

final point is at x-point 6.5 and y-point 3

Now for some polygons:

Polygon Choose:

Set this parameter on the left:

Draw your polygon from

x-point 4.5 and y-point 2.5

and drag straight up 

final click is at x-point 4.5 and y-point 3

Now for some polygons:

Polygon Choose:

Set this parameter in the command line.

Here we see 5 but you should enter 8.

Draw your polygon from

x-point 4.5 and y-point 2.5

and drag straight up 

final click is at x-point 4.5 and y-point 3

Polygon Choose:

Set this parameter on the left:

Draw your polygon from

x-point 2.5 and y-point 2.5

drag straight up 

click at x-point 2.5 and y-point 3

drag straight down 

final click is at x-point 2.5 and y-point 2.75

Polygon Choose:

Set this parameter in the command line.

Here we see 5 but you should enter 8.

Draw your polygon from

x-point 2.5 and y-point 2.5

drag straight up 

click at x-point 2.5 and y-point 3

drag straight down 

final click is at x-point 2.5 and y-point 2.75

Polygon Choose:

Draw your polygon from

x-point 0.5 and y-point 1.75 

drag to make a diamond with the next click at

x-point 1.25 and y-point 2.5

Hold Command and Shift + Press E

Here’s what you have so far….right?

Hold CTRL and Shift + Press E

Here’s what you have so far….right?

Next is Polyline:

Draw your polyline from

x-point 0 and y-point 4 to

x-point 1 and y-point 5 to

x-point 2 and y-point 4 to

x-point 3 and y-point 5 to

x-point 4 and y-point 4 to

hit enter to end the line

Now for some Control Point Curves:

Choose:

Set this parameter on the left (at top on Windows).

Draw your curve from

x-point 5 and y-point 4 to x-point 6 and y-point 5 to

x-point 7 and y-point 4 to x-point 8 and y-point 5 to

x-point 9 and y-point 4  and hit enter to end the curve

Control Point Curves Choose:

Draw your curve from

x-point 10 and y-point 4 

drag handle right to 10.5 and y-point 4 click

2nd click: x-point 11 and y-point 5 

drag handle right to 12 and y-point 5 click

3nd click: x-point 12 and y-point 4 

drag handle right to 12.5 and y-point 4 click

hit enter to end the curve

Control Point Curves  (handle curve) Choose:

Draw your curve from

x-point 10 and y-point 4 

drag handle right to 10.5 and y-point 4 click

2nd click: x-point 11 and y-point 5 

drag handle right to 12 and y-point 5 click

3nd click: x-point 12 and y-point 4 

drag handle right to 12.5 and y-point 4 click

hit enter to end the curve

Control Point Curves Choose:

Draw your curve from

x-point 2 and y-point 9 to

2nd click: x-point 2 and y-point 6

3nd click: x-point 0 and y-point 6 

type 0.5 to set curvature hit enter to end the curve

To choose Conic again hit SPACEBAR

Draw your curve from

x-point 2 and y-point 9 to

2nd point: x-point 2 and y-point 6 

3nd point: x-point 4 and y-point 6 

type 0.5 to set curvature hit enter to end the curve

 

Control Point Curves Flat Spiral

Draw your curve from

x-point 7 and y-point 7.5

drag up to and click at x-point 7 and y-point 9

set this parameter on the left:

final point: x-point 7 and y-point 7.5

Control Point Curves Spiral

RIGHT CLICK ON THE TOOL

TO GET THE FLAT SPIRAL

Draw your curve from

x-point 7 and y-point 7.5

drag up to and click at x-point 7 and y-point 9

set this parameter at the command line:

final point: x-point 7 and y-point 7.5

Points:

Choose:

Draw your points from

x-point 10 and y-point 6 to

2nd point: x-point 12 and y-point 6.5

3nd point: x-point 10 and y-point 7

4th point: x-point 12 and y-point 7.5

5th point: x-point 10 and y-point 8

6th point: x-point 12 and y-point 8.5

7th point: x-point 10 and y-point 9  

hit enter to end points

Control Point Curves

Choose:

The degree parameter is still be set to 5 from the last time you used the tool.

Starting with the lowest point  and zig zagging up,

click one time on each point.

Hit enter when you reach the top.

Hold Command and Shift + Press E

Here’s what you have so far….right?

Hold CTRL and Shift + Press E

Here’s what you have so far….right?

Fillet:

Choose:

Set these parameters on the left:

Fillet top corner of the diamond

Click on the upper two sides of the diamond

one after another.

Fillet:

Choose:

Set the radius parameters at the command line

Here we see 0.4 but you should enter 0.5.

:

Fillet top corner of the diamond

Click on the upper two sides of the diamond

one after another.

Fillet: Chamfer

Set these parameters on the left:

Chamfer bottom corner of the diamond

Click on the lower two sides of the diamond.

Fillet: Chamfer

Set these parameters in the command line:

First Distance: 0.3

Second Distance: 0.3

Chamfer bottom corner of the diamond

Click on the lower two sides of the diamond.

Now we’ll make a few additions with the help of the Osnaps. In the lower left, UNCLICK disable all and select these Osnaps instead:

Now we’ll make a few additions with the help of the Osnaps. CLICK the Osnap button at the bottom

and select these Osnaps:

Rectangle Choose:

Now that the Osnaps are on, it will be easy to find the center of a rectangle.

Drawing from the center of the 2nd rectangle you created,

turn the shape into 3 concentric rectangles like this:

Circle Choose:

Drawing from the midpoint (of the line) of the 2nd circle you created and

dragging straight up, turn the shape into a venn diagram

Drawing from the curve endpoint of the same circle (right-hand side) and

 dragging straight up, add a third circle to the venn diagram.

 Osnaps are really handy when a point doesn’t fall on a grid intersection.

Using:

Create a triangle inside your control point curve.

Two of the corners of the triangle should line up with the midpoints of the curve.

Osnaps will even help you figure out where a fillet ends and a straight line starts.

Using:

Create a shape inside your filleted and chamfered diamond.

Have the shape intersect the points where the fillet ends.

Now lets put each row of shapes on its own layer. Select the layer panel on the right by clicking the icon below.

Now lets put each row of shapes on its own layer. Select the layer panel on the right by clicking the tab below.

Double click each layer name and rename as shown below:

Drag the cursor

around the bottom row to select all the shapes.

While the shapes are selected,

right-click (or control click) on Row 1 

in the layer palette.

Choose:

Drag the cursor

around the bottom row to select all the shapes.

While the shapes are selected,

right-click (or control click) on Row 1 

in the layer palette.

From the contextual menu choose:

Change Objects to Layer

Repeat this process and put each row of shapes on the corresponding layer.

The object will take on the preview color for the layer. This can be changed by double clicking the color box next to the layer name.  Pick whatever colors you like as long as they are easily visible and look good together : )

Your turn!

Now select the my shapes layer by clicking inside the radio button and highlighting the layer.

On this layer, create a new row of 3 or more shapes.

Create whatever shapes you want out of the tools covered in this tutorial

Final touches:

Hold Command and Shift + Press E

Right-click anywhere on the viewport grid and choose:

In the option window, uncheck these properties:

Then, close the window

This will only affect this document, but will make the drawing easier to see.

Final touches:

Hold CTRL and Shift + Press E

Choose FILE>PROPERTIES

Then click on GRID

In the option window, uncheck these properties:

Then, close the window

This will only affect this document, but will make the drawing easier to see.

(You will have one more row of shapes)

You’ve completed this tutorial!!! Save your file

as curvesYourName.3dm AND a screenshot as

curvesYourName.png and turn both in to your shared folder.