loading

The following information is a single lesson in a larger Tinkercad project. Check out this and more projects on Tinkercad.

Project Overview:

Air power has been harnessed for centuries to power the sails of boats or create the mechanical motion of a windmill.

In this project, you will harness the power of air captured in a balloon to power a 3D printed car you are going to design and print.

In this project you will:

- Design a body for your 3D printed car.

- Create a path for air to exit the balloon in a way that will power your car.

- Create wheels and axles for your car to roll on.

Step 1: Begin the Car Body Design

The body of the car is the main shape we will create in this project.

The body will tell us where the axles and wheels will be positioned, so we will begin here. Let's get started!

In the next lesson you will learn to create the balloon connector.

Instructions

  1. Place a box on the workplane and size it to be 20mm wide, 60mm long, and 20mm tall.
  2. Continue to the next step.

Step 2: Add Holes for the Axles

We need to create openings for the axles to run through the car.

After we add the axles we can attach wheels to them.

Instructions

  1. Place a cylinder on the workplane and size it to 11mm in diameter and 25mm tall.
  2. Change the cylinder to a hole.
  3. Continue to the next step.

Step 3: Align the First Axle

We can now position the axle so it will make a hole through the body that we can slide the first axle through.

Instructions

  1. Rotate the cylinder 90° so the long direction crosses long ways through the body.
  2. Select the box and cylinder and align them to the bottom of the box, the end of the box and the center of the box. Tip: See the image above to see where the hole should be positioned.
  3. Continue to the next step.

Step 4: Position the First Axle

We now have the axle aligned with the body, but it is right at the edge of the box.

We need to position it just a little to make it a bit stronger.

Instructions

  1. Rotate your view to look at the model from the side.
  2. Select the cylinder and press the left arrow key on the keyboard 5 times. This will move the hole 5mm to the left away from the end of the box.
  3. With the cylinder still selected use the black arrow on top to lift the cylinder up away from the workplane 3mm.
  4. Continue to the next step.

Step 5: Create and Align the Second Axle

We can now use the cylinder hole we just created to make a second one that we can position at the other end of the car.

Instructions

  1. Duplicate the first axle hole by selecting Duplicate button on the toolbar.
  2. Change the snap grid to 5mm.
  3. Rotate the view to look at the car from the side and press the left arrow 8 times to move the second axle to the opposite end of the car.This will move the second axle 40mm from the first. (8 arrow presses x 5mm movement with each press = 40mm)
  4. Select all the shapes and group them into a single item.
  5. Continue to the next step.

Step 6: Make Your Car More Aerodynamic

You don't see too many square car on the road for a good reason. Square shapes have a hard time moving through the air.

Let's streamline your car making it a little more aerodynamic.

Instructions

  1. Place a wedge shape on the work plane and size it to be 5mm tall, 20mm wide, and 40mm long.
  2. Change the wedge to a hole.
  3. Continue to the next step.

Step 7: Position the Wedge Shape

Next we will position the wedge to remove some material from the car to make it more aerodynamic.

Instructions

  1. Rotate the wedge 180° so the flat face that is on the workplane is facing upwards.
  2. Select the car body and the wedge and align them to the maximum on the left, to the maximum toward the top of the car and to the center width wise. Tip: See image for specific position.
  3. Select both shapes and group them into a single item.
  4. Continue to the next step.

Step 8: Add a Nose Wedge to the Car

To complete the aerodynamics work we will add a wedge shape to the from of the car to make it more pointy in the front.

Instructions

  1. Place a wedge shape on the workplane and size it to 20mm wide, 10mm long and 15mm tall.
  2. Rotate the wedge 90° counter clockwise on the Workplane.
  3. Select both shapes and align them to the center of the car width wise.
  4. Let the snap grid to 1 and use the arrow keys to position the wedge at the front of the car. Tip: The snap grid can be changed in the lower right corner of the graphics window.
  5. Select both shapes and group them into a single item.
  6. Continue to the next step.

Step 9: Create a Path for the Air

Before we complete the body we will create a path for the air to exit the balloon and be directed out the back of the car.

We will place the balloon connector on the flat area on top of the car so we will align the path with that surface.

To create the path shape we will have to chop up a torus shape.

Instructions

  1. Place a torus shape on the work plane and size it to be 16mm square on the workplane.
  2. Place a box shape on the workplane and size it to 16mm square.
  3. Change the box to a hole.
  4. Duplicate the box by selecting Duplicate from the edit menu.
  5. Align the boxes so only 1/4 of the torus shape is showing. Tip: See the image for exact positioning.
  6. Select the two boxes and the torus and group them into a single item.
  7. Continue to the next step.

Step 10: Extend the Path

Now we need to extend the path to be long enough to exit the back of the car.

Instructions

  1. Place a cylinder on the workplane and size it to 4mm in diameter and 2mm tall.
  2. Rotate the 90° to it is laying on its side length wise next to the body.
  3. Select both the torus shape and the cylinder and align them so the cylinder touches the torus and is pointing to the back of the car. Remember: You can use your arrow keys to easily move shapes on the workplane.
  4. Continue to the next step.

Step 11: Position the Air Path

We can now group the air path shapes and position them to be ready when we create the balloon connection.

Instructions

  1. Select the torus and cylinder shape and group them into a single item.
  2. Change the new shape to a hole.
  3. Rotate the shape 90degree so the end of the curved torus is facing upwards.
  4. Change the car body to a hole temporarily to help when aligning the air path.
  5. Select both shapes and align them to top, middle width wise, and to the back of the car.
  6. Continue to the next step.

Step 12: Position the Car Body for 3D Printing

We can now prepare our car for 3D printing. This can be done by simply rotating the body on its side.

Doing this will help make the axle holes print better for this project.

Instructions

  1. Select the car body and rotate it 90° so it is laying on its side.
  2. Continue to the next step.

Step 13: 3D Print Your Car Body

You can now export your car body for 3D printing.

Instructions

  1. Select Download for 3D printing from the design menu.
  2. Select .STL as the download format. The .STL file format can be used with any 3D printer.
  3. Import the .STL file into your 3D printer software and print.
  4. Continue to the next lesson.

In the next lesson you will learn to add a balloon connector for your car!

Next Lesson:Create the Balloon Connector

About This Instructable

562views

0favorites

License:

More by tinkercad-support:Create Your Superhero Suit Create Your Superhero Suit Create a Ballerina's Tutu 
Add instructable to: