Overhang angle threshold in 3D Printing - Mini Project: Build & Apply

Overhang Angle Threshold

📖 Scenario: You are preparing a 3D model for printing. To ensure good print quality, you need to identify parts of the model that have overhangs exceeding a certain angle threshold. Overhangs beyond this angle may require supports during printing.

🎯 Goal: Create a simple data structure representing overhang angles of different parts of a 3D model, set an overhang angle threshold, filter the parts that exceed this threshold, and finalize the list of parts needing support.

📋 What You'll Learn

Create a dictionary called overhang_angles with exact keys and values representing parts and their overhang angles in degrees.

Create a variable called threshold_angle and set it to the exact value 45.

Use a dictionary comprehension to create a new dictionary called parts_needing_support containing only parts with overhang angles greater than threshold_angle.

Add a final line that sets a variable called support_required to true if parts_needing_support is not empty, otherwise false.

💡 Why This Matters

🌍 Real World

3D printing requires checking model parts for overhangs that may cause printing issues. Identifying these parts helps in planning supports to improve print quality.

💼 Career

Understanding how to filter and analyze data based on thresholds is useful in quality control, manufacturing, and engineering roles involving 3D printing or similar processes.

1

Create the overhang angles dictionary

Create a dictionary called overhang_angles with these exact entries: 'base': 30, 'arm': 50, 'head': 60, 'leg': 40, 'tail': 55.

3D Printing

# Create the overhang_angles dictionary with exact parts and angles
# Your code here

Need a hint?

Use curly braces {} to create a dictionary with keys as part names and values as angles.

2

Set the overhang angle threshold

Create a variable called threshold_angle and set it to the integer value 45.

3D Printing

overhang_angles = {'base': 30, 'arm': 50, 'head': 60, 'leg': 40, 'tail': 55}
# Set the threshold_angle variable to 45
# Your code here

Need a hint?

Assign the number 45 to the variable threshold_angle.

3

Filter parts exceeding the threshold

Use a dictionary comprehension to create a new dictionary called parts_needing_support that includes only the parts from overhang_angles with angles greater than threshold_angle.

3D Printing

overhang_angles = {'base': 30, 'arm': 50, 'head': 60, 'leg': 40, 'tail': 55}
threshold_angle = 45
# Create parts_needing_support dictionary with parts having angles > threshold_angle
# Your code here

Need a hint?

Use {part: angle for part, angle in overhang_angles.items() if angle > threshold_angle} to filter the dictionary.

4

Set support required flag

Add a line that creates a variable called support_required and sets it to true if parts_needing_support is not empty, otherwise false.

3D Printing

overhang_angles = {'base': 30, 'arm': 50, 'head': 60, 'leg': 40, 'tail': 55}
threshold_angle = 45
parts_needing_support = {part: angle for part, angle in overhang_angles.items() if angle > threshold_angle}
# Set support_required to true if parts_needing_support is not empty, else false
# Your code here

Need a hint?

Use a conditional expression to check if parts_needing_support is empty or not.