Mold making with 3D printing - Mini Project: Build & Apply

Mold making with 3D printing

📖 Scenario: You want to create a simple mold for casting small objects using a 3D printer. This project will guide you through the basic steps of designing and preparing a mold model suitable for 3D printing.

🎯 Goal: Build a basic 3D mold model by defining the mold shape, setting the mold cavity size, applying the core logic to create the cavity, and finalizing the mold design for printing.

📋 What You'll Learn

Create the initial mold shape data structure

Add a configuration variable for cavity size

Apply the main logic to create the mold cavity

Complete the mold design with final print settings

💡 Why This Matters

🌍 Real World

3D printing molds is a common way to create custom shapes for casting materials like resin, silicone, or metal. This project helps beginners understand how to plan and prepare mold designs before printing.

💼 Career

Knowledge of mold design and 3D printing preparation is useful for product designers, prototyping engineers, and manufacturing technicians working with additive manufacturing.

1

Define the mold base dimensions

Create a dictionary called mold_base with keys length, width, and height set to 100, 80, and 40 respectively.

3D Printing

# Create the mold_base dictionary with exact dimensions
# Your code here

Need a hint?

Use a Python dictionary with keys 'length', 'width', and 'height' and assign the exact values.

2

Set the mold cavity size

Create a variable called cavity_size and set it to a dictionary with keys length, width, and depth set to 60, 50, and 30 respectively.

3D Printing

mold_base = {'length': 100, 'width': 80, 'height': 40}
# Define the cavity_size dictionary with exact dimensions
# Your code here

Need a hint?

Define cavity_size as a dictionary with the specified keys and values.

3

Create the mold cavity position

Create a dictionary called cavity_position with keys x, y, and z that center the cavity inside the mold base. Calculate each coordinate as half the difference between mold_base and cavity_size dimensions for length/x and width/y, and set z to 0.

3D Printing

mold_base = {'length': 100, 'width': 80, 'height': 40}
cavity_size = {'length': 60, 'width': 50, 'depth': 30}
# Calculate cavity_position to center cavity inside mold_base
# Your code here

Need a hint?

Use simple arithmetic to center the cavity inside the mold base on x and y axes, and set z to 0.

4

Finalize mold design with print settings

Create a dictionary called mold_design that includes base set to mold_base, cavity set to cavity_size, position set to cavity_position, and add a key print_settings with a nested dictionary containing layer_height set to 0.2 and infill set to 20.

3D Printing

mold_base = {'length': 100, 'width': 80, 'height': 40}
cavity_size = {'length': 60, 'width': 50, 'depth': 30}
cavity_position = {
    'x': (mold_base['length'] - cavity_size['length']) / 2,
    'y': (mold_base['width'] - cavity_size['width']) / 2,
    'z': 0
}
# Create mold_design dictionary with base, cavity, position, and print_settings
# Your code here

Need a hint?

Combine all previous parts into one dictionary and add print settings as a nested dictionary.