Course Content
Module 2: 3D Printers & Materials
This section gives an overview of the various 3D Printer components, 3D Printer types and materials.
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Module 3: 3D Printing File Types
This lesson provides a comprehensive understanding of the myriads of file extensions in the 3D Printing.
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Module 4: Introduction to 3D Modeling
Start designing your own printable objects with easy-to-use modeling tools. This module introduces you to beginner-friendly 3D modeling software and teaches you how to create objects that are optimized for the printing process.
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Module 5: Slicing and G-Code
Before printing, models need to be sliced into printable layers. Learn how slicing software works, how to adjust print settings like layer height and infill, and how the slicer generates the G-code that your printer uses to build the object.
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Module 6: The Print Process
Now it’s time to bring your models to life. Learn how to set up your printer, load materials, calibrate settings, and start your first print. This module also covers how to identify and fix common printing issues like warping or layer shifting.
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Module 7: Post-Processing
After printing, your model might need some finishing work. Discover how to remove supports, sand rough edges, paint your models, and combine printed parts into assemblies. These techniques can take your prints from good to great.
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Module 8: Introduction to 3D Scanning
Learn how physical objects can be digitized using 3D scanning technology. This module introduces different scanning methods, software for cleaning and editing scan data, and how scanning is used in design, repair, and reverse engineering.
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Module 9: Real-World Applications
Explore how 3D printing is transforming industries like healthcare, automotive, education, and aerospace. See case studies and examples of how professionals use 3D printing to solve real problems and prototype new ideas.
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Module 10: The Business of 3D Printing
In this module, students explore how 3D printing extends beyond the workshop and into the world of business, sustainability, and emerging markets. From eco-conscious manufacturing to digital entrepreneurship, learners discover how additive manufacturing is reshaping supply chains, product development, and global commerce. The module begins by examining sustainability trends, showing how 3D printing reduces waste, supports local production, and enables environmentally friendly materials. Students then move into the future of additive technologies, including bioprinting, AI-driven design, and off-planet construction. The module also highlights how 3D printing enables new business models—from custom product startups and digital part libraries to contract printing services and hybrid manufacturing workflows. Students gain insight into market opportunities, value propositions, and the strategic use of 3D printing to create value across industries. Whether learners aim to start a business, join an innovative company, or simply understand the economics behind additive manufacturing, this module equips them with the tools and trends that define the future of 3D printing as a business.
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Private: 3D Printing Fundamentals.
About Lesson

🧩 Lesson: Basic Design Concepts in 3D Modeling

✅ Summary

Before diving into complex modeling tools or creating your first printable object, it’s essential to grasp the fundamentals of design thinking in 3D. This lesson introduces you to the core principles that guide successful 3D models—from geometric foundations to practical design-for-printing considerations.


🎯 Learning Objectives

By the end of this lesson, learners will be able to:

  • Understand the basic geometry that underpins all 3D models

  • Identify essential design elements such as solids, voids, and symmetry

  • Apply fundamental modeling concepts like scaling, rotation, and alignment

  • Recognize key design principles specific to 3D printing (e.g., overhangs, wall thickness, and tolerances)

  • Avoid common design mistakes that can lead to printing failures


📘 Lesson Content


🧱 1. Understanding 3D Geometry

At its core, 3D modeling is the practice of manipulating shapes in three dimensions—X (width), Y (depth), and Z (height). All models are made from one or more primitive shapes:

  • Cube/Box

  • Sphere

  • Cylinder

  • Cone

  • Torus (donut shape)

Designing in 3D is like building with digital clay—you sculpt, combine, subtract, and refine these forms into a usable object.


🧊 2. Solids vs. Voids

A solid model defines the mass of an object—what’s there. A void (also called a boolean subtraction) defines what’s removed from the model (like a hole or hollow cavity).

When modeling for 3D printing:

  • Always work with manifold models—those that are “watertight” with no gaps or holes in geometry.

  • Avoid non-manifold geometry, such as edges shared by more than two faces or disconnected mesh surfaces, which confuse slicers.


🎯 3. Core Transformations

These are the essential tools you’ll use in any 3D modeling software:

  • Translation (Move): Moves a shape along the X, Y, or Z axis

  • Rotation: Spins an object around one of the three axes

  • Scale: Resizes the object proportionally or along a single axis

  • Mirror/Symmetry: Duplicates and flips geometry to create symmetry

  • Group/Ungroup: Combines or separates models for editing


🧰 4. Design for Printability

A beautiful model that can’t be printed is just a digital sculpture. Here are basic print-friendly design rules:

🟦 Wall Thickness

  • Avoid making walls too thin. For FDM, aim for ≥ 0.8 mm (2x nozzle diameter). For SLA, ≥ 0.5 mm.

🔻 Overhangs and Bridges

  • FDM printers struggle with angles greater than 45° from vertical. Beyond that, you’ll likely need supports.

  • Design smarter by orienting models to reduce the number of overhangs.

⚙️ Tolerances

  • Leave gaps between parts that must move or fit together.

    • For snug fit: 0.2 – 0.4 mm

    • For loose/sliding fit: 0.5 – 1 mm

🔄 Orientation and Build Strength

  • FDM parts are weaker along the Z-axis (layer lines).

  • Orient your model to maximize strength along stress points.


💡 5. Design Intent: Aesthetic vs. Functional

Ask yourself: Is this object just for looks, or will it be used?

  • Aesthetic designs focus on shape, surface, and symmetry

  • Functional designs need structural integrity, precision, and fit
    Combining both requires balancing form and function—a critical skill in professional modeling.


❌ 6. Common Beginner Mistakes

Mistake Why It’s a Problem
Thin walls Fragile prints, often fail to slice
Non-manifold geometry Causes slicing errors
No tolerances on joints Moving parts will fuse or not fit
Ignoring printer limitations Print fails due to unsupported geometry
Not checking model orientation Weak or warped prints

📂 Additional Resources

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