Instructions

Project Overview

In this project, you will design, model, assemble, and fabricate a 3×3 puzzle cube composed of five unique interlocking pieces. You will apply engineering design principles, geometric constraints, 3D modeling skills, and additive manufacturing processes. Your final deliverables will include digital models, technical drawings, a physical 3D‑printed puzzle cube, and a short reflection on your design iteration.

Project Objectives

By completing this project, you will be able to:

• Use CAD modeling techniques (extrusions, constraints, patterns, assemblies) to create fully‑defined 3D parts.

• Apply dimensioning standards to create accurate technical drawings.

• Demonstrate understanding of isometric modeling and spatial visualization.

• Use additive manufacturing (3D printing) to prototype your design.

• Test and evaluate your physical prototype and communicate design decisions.

Part 1 - Research and Planning

1. Understand the Constraints

Your puzzle cube must:

• Be a 3×3×3 cube (27 total unit cubes).

• Use at least five pieces.

• Use unit cubes that all have the same dimensions.

• Have pieces that:

  • Interlock structurally.

  • Can be assembled and disassembled by hand without breaking or bending.

  • Are unique in shape (no duplicates).

• No single piece may use fewer than three or more than six cubes.

2. Sketch Ideation

• Generate at least three hand‑drawn potential puzzle piece sets.

• Include:

  • Isometric sketches of each piece.

  • A full-assembly cube sketch.

  • Numbered or colored piece labels.

Part 2 - 3D Modeling in CAD

1. Create the Unit Cube

• Set the cube size (typically 0.5", depending on printer tolerance).

• Model the unit cube as a new part, fully constrained and dimensioned.

2. Model the Puzzle Pieces

For each of the five pieces:

• Start a new part file.

• Join the required number of unit cubes using:

  • Constraints

  • Patterns

  • Extrusions or multi‑body features

• Ensure pieces are precise and fused into single solids.

Part 3 - Technical Drawings

Create a drawing file for each piece, including:

• Orthographic views (front, top, right)

• Isometric view

• Overall dimensions

• Unit cube dimensions

• Piece name/label

• Material: PLA plastic

• Title block completion

Create a separate drawing of the assembled cube.