In this tutorial, you will learn the basics of the Orchard modeling interface, by designing and 3D printing a basic bar fidget spinner:

Note: The bearings used are standard 608ZZ Shielded 8x22x7 mm bearings. You can purchase them here. If your bearings have different sizes, you can design for those sizes.

Getting Started:

  • If you haven't already, you should sign up for an account. You will need an account in order to save your work. 
  • From the browse page, type "bar spinner" in the search bar to bring up the Bar Spinner Tutorial:
  • Click on the Bar Spinner Tutorial card to load its design page: 

This page shows all the information about a design scene. You can see who created it, the number of approvals (likes), comment on the design, copy parts from the scene and share the design with friends.

In the bottom right, you see the design tree. This tree shows the evolution of this design over time (although this example doesn't have many branches):

The Edit button in the bottom-left enables you to edit the current branch of any object. Now it's time to get started modeling. 

  • Click the Edit Button to start modeling from this point. 

Modeling

We are going to design this spinner from scratch.  

  • Single-click on the spinner and then click the Delete button to remove it from the scene. Your scene should be empty now:
  • Enter Sketch Mode

We will start by sketching on the bottom plane. 

  • Hover your mouse over the origin and click on the blue plane once it appears. That will show the Sketch button. 
  • Click on the Sketch button to enter sketch mode:

In sketch mode, you can create 2D profiles of shapes that you will then convert into 3D objects. You can sketch with lines, circles, and arcs. The cursor on the far left enables you to select and modify the lines, circles, and arcs

  • Click the line tool, and draw a horizontal line, as close to the center as possible. Click once to begin placing the line, and a second time to place the second point. The line tool will follow your cursor like a rubber band until it's a closed-loop, so press "Esc" to cancel the chain of lines. 
  • Click the cursor icon (or press escape twice) to enter Select mode, and select the line:

You will notice the length of the line, and the available Constraints above it. Constraints just tell the line, circle, or arc what to do. In this case, we have the ability to set the line to be horizontal, vertical, or turn it into a construction element.

  • Click the horizontal constraint, the construction element (dotted lines), and enter 7.6 as the length, and press the checkmark: 
  • With the line still selected, hold ctrl (or command on a Mac) and click the origin point, and select the "Midpoint" Constraint: 

This will be the basis of the bar spinner. The construction line around the origin will help make a symmetric model. 

  • With the arc tool selected, draw an arc at each end of the line. Each arc will require three clicks; the first two place the edges, and the third places the center. Your sketch should look something like this: 
  • Enter select mode (press "Esc" twice) and drag the centers of the arcs over the ends of the lines, so they snap to the lines: 
  • Holding ctrl/command, select the three lines on each arc, and press the vertical constraint: 
  • Select the lines, and draw lines connecting each end of the arcs by hovering your mouse near the point until it turns green, then clicking again to drop the point. Remember to press Esc to cancel the line drawing in between lines: 

When the last point is snapped closed, the sketch should turn light blue, indicating that there's a closed loop: 

Now we're going to straighten out those lines. 

  • Enter select mode (press Esc, or the cursor button), select both horizontal lines (holding ctrl/command), and set them to be horizontal: 

Yours may look slightly different, and that's okay because we haven't set the width of this spinner. We want it to be ~35mm or 3.5cm wide. 

  • We can set the width by selecting the top and bottom points and constraining the vertical distance to 3.5cm : 

Or you can select an arc, and set the radius to "3.5/2" cm, and it will automatically calculate that as a radius of 1.75cm:

Now it's time to add our holes for the bearings. 

  • Click the circle tool, and draw three circles on each of the points (don't worry about their sizes yet):
  • Enter Select mode (press Esc or the cursor icon), select all three circles (holding ctrl/command), and press the "Equal Radius" Constraint: 

Now all of the holes will be the same size. 

  • Single-click one of the circles, and set the radius to 1.1cm (assuming you have 2.2cm [22mm] diameter bearings):

Now your sketch is complete. 

  • Close it by pressing the green checkmark (don't press the red "X" or you'll cancel the sketch without saving): 

Now you're back in 3D mode, where you can pull this 2D sketch into a 3D object. 

  • Holding ctrl/command, single left-click the three circles and the outside profile, and press the "Extrude" button: 

You can pull the arrow to manually set how tall this spinner will be, or enter a value under "magnitude." 

  • Enter "0.7" as the value, and press the checkmark: 

Now you will cut the holes from the body of the spinner. 

  • Double-click the body of the spinner, and holding ctrl/command, double-click each of the holes, and press Cut:

This will always take the first object selected, and cut away whatever is selected after. In this case, all 3 holes will be cut away from the body. Make sure you have selected the body first. It's helpful to wait until the center holes are highlighted green before trying to double-click them. If you want to keep the cylinders after you cut them away, you can toggle the "Keep Tool" on. In this case we will keep it off. 

  • Press the checkmark to accept. The results should look like this: 

Although it's basically done, the sharp edges would be uncomfortable to spin, so let's round them off a bit. 

  • Holding ctrl/command, select two edges (one on top and one on bottom), and press the Chamfer button to flatten those edges. Enter 0.2 cm and press enter: 

That's it! You're done!

Optional: You can add any materials or colors to finalize the model by double-clicking the object, and pressing "Set Material":

If you are a student currently in a class, show your teacher the model and sketch at this point before saving.

You can find the sketch by hovering in the menu in the bottom left: 

Saving

Congratulations, you just designed a spinner! Now it is time to publish your design. Click on the "Publish" button at the top right of the interface to load the save form.

The save form allows you to describe the changes you have made to this design and name any new parts you have added to the scene. The only required fields are the Design name and all part names. Once you are ready, click the save button to publish your design. You will know the save completed successfully when you see this message appear at the bottom of the screen: 

Printing

If you would like to get a physical copy of the cup you just designed, just hit the back button to navigate back to the Design page. Browse through the design tree until you find the node you just saved. Then you have two options:

  • Download and 3D print Yourself: If you have a 3D printer, you can download the STL and print manually. Just click the Download button on the Design page, and select the .STL . When your STL has been generated, you will be able to download it:
  • Order a 3D print: If you do not have a 3D printer, you can order a copy of this design by clicking the "Order" button. This will upload the design to our fabrication service provider where you can browse through a list of fabricators in your area who will print (and ship if you would like) your design. 

Ready to give this a shot?

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