3D design

Design with Fusion360

In addition to introducing the ability to draw fixed-size and more regular workpieces in the previous chapter on 2D, Fusion 360's Form mode also allows for the design of irregular shapes, such as portraits or pumpkins, using a "sculpting" approach.
I want to include some character models in my final project, so I'm trying to use Form mode to create a 3D character model.

Creating a pumpkin lantern

First, create a sketch to draw the outer edge of one side of the pumpkin's cross-section. You can use a reference image to help guide your drawing.

Use the Revolve command to rotate the outer outline into a 3D shape.

Since the pumpkin is rotationally symmetric, you can set the model to be rotationally symmetric in the Symmetry - Mirror-Internal. So, by changing just one part, you can simultaneously modify the entire model.

Use Edit form to adjust one of the outer edge, create the shape of the pumpkin.

The top part can also be deformed using the Edit Form feature, but you need to hold the Alt key and pull upward to create the "stem".
Holding the Alt key while using Edit Form allows you to add more content based on the original shape.

Below is the prototype model completed through Form mode. You can click Finish Form in the upper right corner to exit Form mode.

Generally, models created in Form mode are solid if they are closed. I want to make the model hollow, like a real pumpkin lantern, so I used the Shell command to convert the model from solid to hollow.

Sketch the face in 2D by Create sketch, and use the Extrude command to cut the face from the pumpkin.

Use the Split body command to split the model.

Use the Appearance command to change the material of the model.

Using the Render mode can make the model look more realistic.

Design with MagicaVoxel

MagicaVoxel is a free voxel modeling tool designed for creating 3D models and animations using a grid of cubes (voxels). It is particularly popular among indie game developers and artists for its simplicity and versatility.
Also, you can import bitmap images into MagicaVoxel to create voxel models based on the pixel data of the image.
I want a wizard character model for the final project base on the 2D design, which is build in 2D with Mircosoft Paint to import to MagicaVoxel.

Process

The import botton is here:

Since the image is imported horizontally, you can use the Rotate function to change it to a vertical orientation.

If the background color is too close to the image, you can change the background color here.

The basic operation method is to build the model by brush, which can be form in point, line or face.
If you want to create a symmetrical model, you can click below to mirror it along the X, Y, or Z axis For example, I choose to build symmetriical model in X axis. (The yellow part)

To build up the hat, I go to the top view and build up a circle, and the draft of the hat is appear.

Use the same concept to bulid the back of the model, so as the other part.

Here is the final result. The result can be save as obj format for 3D printing.