Adding Text, Importing Models & Advanced Features

Introduction

TinkerCAD's advanced features unlock professional-grade design capabilities. This guide covers adding text to designs, importing external models, and creating multi-component assemblies that rival professional CAD software.

Adding Text to Your Designs

Creating Text Objects

1. Click the Shape Library on the left
2. Search for Text in the library
3. Click to add a text object to your canvas
4. Double-click the text to edit it
5. Type your desired text (e.g., "EOLAS PRINTS")
6. Press Enter to confirm

Text Properties

Once created, adjust text properties in the Properties Panel:

• Font: Choose from multiple fonts (Arial, Courier, Times, etc.)
• Size: Text height in millimetres (typical range: 5–20mm)
• Thickness: Extrusion depth (1–5mm typical)
• Alignment: Left, center, or right

Practical Example: Branded Desk Organizer

Add your company name to the organiser from Guide 3:

1. Create text "EOLAS PRINTS"
2. Set font to Arial, size 8mm, thickness 1mm
3. Position at X=10mm, Y=5mm, Z=40mm (on top of the organiser)
4. Group with the organiser body
5. Export as STL

Result: Your design now has embossed branding that prints as part of the object.

Text Design Tips

• Size: Keep text 6mm or larger for readability after printing
• Thickness: 1–2mm is ideal; thicker text is harder to print cleanly
• Positioning: Place text on flat surfaces for best results
• Font Choice: Sans-serif fonts (Arial, Helvetica) print more clearly than serif fonts
• Contrast: Embossed text (raised) shows better than engraved (sunken)

Importing External Models

Supported File Formats

TinkerCAD can import designs from external sources:

• STL: Standard 3D printing format (most common)
• OBJ: 3D object format (supports textures)
• SVG: Vector graphics (converted to 3D shapes)

Importing a Model

1. Click Import in the top toolbar
2. Select your file (STL, OBJ, or SVG)
3. Click Open
4. The model appears on your canvas
5. Adjust position, rotation, and scale as needed

Practical Use Cases

• Logo Integration: Import your company logo (SVG) and embed it into products
• Component Assembly: Import pre-designed parts (bearings, connectors) and combine them
• Complex Geometry: Import organic shapes created in other software and integrate them with TinkerCAD designs
• Educational Models: Import anatomical models, mechanical assemblies, or architectural designs for classroom use

Creating Multi-Component Assemblies

Assembly Workflow

Design complex products by combining multiple parts:

1. Design Individual Parts: Create each component separately in TinkerCAD
2. Export Each Part: Save as individual STL files
3. Create Assembly Design: In a new TinkerCAD project, import all parts
4. Position and Align: Use precise positioning to assemble parts
5. Verify Fit: Check that parts align correctly
6. Document Assembly: Take screenshots or create assembly instructions

Example: Modular Robot Arm

Design a 4-segment robot arm with rotating joints:

Part 1: Base Plate

• Dimensions: 60mm × 60mm × 5mm
• Central hole: 8mm diameter (for joint)

Part 2: Arm Segment (×3)

• Dimensions: 50mm × 20mm × 15mm
• End holes: 8mm diameter (for joints)
• Wall thickness: 2mm

Part 3: Joint Connector (×3)

• Cylinder: 8mm diameter, 25mm length
• Allows rotation between segments

Assembly Steps

1. Design all four parts in separate TinkerCAD projects
2. Export each as STL
3. Create a new project called "Robot Arm Assembly"
4. Import all parts
5. Position: Base at origin, first segment at Z=5mm, second segment at Z=20mm, etc.
6. Align holes vertically so connectors pass through
7. Document with assembly instructions

Advanced Positioning Techniques

Alignment Tools

When assembling multiple parts, use these techniques:

1. Snap to Grid: Enable grid snapping for quick alignment
2. Duplicate & Mirror: Create symmetrical parts by duplicating and mirroring
3. Precise Positioning: Use the Properties Panel to set exact coordinates
4. Rotation: Rotate parts in 15° or 45° increments for mechanical assemblies

Alignment Formula for Stacked Components

When stacking parts vertically:

• Part 1 Z Position: Height ÷ 2 (center on workplane)
• Part 2 Z Position: Part 1 Height + (Part 2 Height ÷ 2)
• Part 3 Z Position: Part 1 Height + Part 2 Height + (Part 3 Height ÷ 2)

Example: Stacking Three Boxes

• Box 1: 20mm height, Z=10mm
• Box 2: 15mm height, Z=20+7.5=27.5mm
• Box 3: 10mm height, Z=35+5=40mm

Combining Imported Models with TinkerCAD Designs

Workflow Example: Custom Mounting Bracket

1. Import Component: Import a motor (STL file) that needs mounting
2. Design Bracket: Create a mounting bracket around the motor using TinkerCAD shapes
3. Create Holes: Add mounting holes that align with the motor's bolt holes
4. Verify Clearance: Ensure the motor fits without interference
5. Export Assembly: Export the complete design with both imported and native TinkerCAD elements

Performance Tips for Complex Designs

• Limit Imported Models: Too many large STL imports can slow down TinkerCAD
• Simplify Geometry: Remove unnecessary details from imported models
• Use Groups: Group related parts to keep the design organized
• Save Frequently: Complex assemblies can be lost if not saved regularly
• Test Export: Export frequently to verify the design exports correctly

Key Takeaways

• Add text with 6mm+ size for readability; 1–2mm thickness for clean printing
• Import STL, OBJ, or SVG files to integrate external designs
• Create multi-component assemblies by importing and positioning parts
• Use precise positioning formulas for stacked and aligned components
• Combine imported models with TinkerCAD shapes for custom solutions
• Save and test frequently when working with complex assemblies

Next in the series: Export, Slicing & Printing Prep – From Design to Print