Week 05 - 3D Scanning and Printing¶

In Week 05 started with intensive describtion from Proff. Neil and the Senior Scientist on the sector. I explored the complete workflow of 3D scanning and additive manufacturing, learning how to capture real-world objects digitally and reproduce them through 3D printing and I also studied key additive manufacturing concepts such as layer-by-layer fabrication, infill structures, supports, tolerances, and material behavior, print some design/models that cannot be made with the subtractive methods.
Reference class page:
Scanning and 3D printing

My SSTM

week05 SSTM

Start with Local Sessions¶

During Week 05, I learned the fundamentals of 3D printting, scanning and how software working for 3D printing. We introduced to tools, methods,must to do and documentation status update and followup as well how to access the assesment platform. Then additive method by Rico. a. Initail design to thinkercad with Rico TinkerCadfor additivemanufacturing
Source: Local instructor, Rico

b. Progress to the additive aligned design
TinkerCadMethod
Source: Local instructor, Rico

c. Ready to 3D print for additive Manufacturing (hard to subtractive method) tinkercadwithRico Source: Local instructor, Rico

Group assignment¶

Week05 Group assignment

B. Individual assignment¶

Design, Document, and 3D Print an Object That Could Not Be Made Subtractively¶

Learning Outcomes¶

Understanding of Design for Additive Manufacturing (DfAM)
Designing internal cavities
Managing overhangs and supports
Tolerance and wall thickness control
Optimizing print settings

Objective¶

Design and fabricate a small 3D object (few cm³) that cannot be produced using subtractive manufacturing (e.g., CNC milling).

Why It Cannot Be Made Subtractively¶

Includes internal enclosed geometry
Contains hidden cavities / complex inner structures
No direct tool access for milling tools
Demonstrates advantages of additive manufacturing (DfAM)

Step-by-Step Process¶

1. Concept & Sketch and tools to use¶

Defined design idea and methods
Sketched internal and external geometry
Considered printer time limitation

2. CAD Modeling¶

Model an object in CAD software using free model and modefied it in tinkersCad https://www.tinkercad.com/
Designed internal cavities and complex features that cannot be made with substactive methods
Checked wall thickness and clearances and neccessary printing steps

Model to be reengineered and modified Source: https://www.thingiverse.com/thing:7287234

Modification to additive only methods for manufacturing it

Modoified to made complex Made only for additives MNf

3. Export File¶

Exported model as .STL
Verified mesh quality

alt text ready to sliced

4. Slicing¶

Imported STL into slicer
Adjusted:
Layer height
Infill percentage
Print orientation
Support settings (if needed)
Applied design rules identified in group assignment

MAkerBot Sketkch Slicer

5. 3D Printing (on progress) — now done¶

Printed using MakerBot Sketch
Ensured print time within allowed limit
Removed supports and cleaned model

## Final printed is:

alt text

complexity: Spireal inner structur and once printed without assembling for moving part. Non subtractive printed

3D Scan an Object (Optional: Print It)¶

Learning Outcomes¶

Proper scanning techniques
Mesh editing and repair
Difference between CAD model and scanned mesh
Reverse engineering basics

Digitize a physical object using 3D scanning and prepare it for fabrication. The week focused on understanding different 3D scanning methods, processing and cleaning scanned models, optimizing mesh files, and preparing designs for fabrication using slicing software.