3D Printing FoundationsUnderstanding Scale
2 / 14In progressIn progress

3D Printing Foundations

Course progress0/14
1Understanding 3D Printing
  • Introduction to 3D Printing
  • Understanding Scale
  • Your First Print-Sized Model
  • Checking Print Dimensions
2Build Plate & Wall Thickness
  • The Build Plate
  • Positioning Objects
  • Wall Thickness
  • Creating Thick-Walled Objects
3Overhangs & Supports
  • Understanding Overhangs
  • Self-Supporting Shapes
  • When to Use Supports
  • Optimizing for Minimal Supports
4Your First Print
  • Print Readiness Checklist
  • Project: Simple Keychain

3D Printing Foundations

Course progress0/14
1Understanding 3D Printing
  • Introduction to 3D Printing
  • Understanding Scale
  • Your First Print-Sized Model
  • Checking Print Dimensions
2Build Plate & Wall Thickness
  • The Build Plate
  • Positioning Objects
  • Wall Thickness
  • Creating Thick-Walled Objects
3Overhangs & Supports
  • Understanding Overhangs
  • Self-Supporting Shapes
  • When to Use Supports
  • Optimizing for Minimal Supports
4Your First Print
  • Print Readiness Checklist
  • Project: Simple Keychain

Scale: The Foundation of 3D Printing

Ruler and measurement tools
Precise measurement is essential for 3D printing

The most common mistake is incorrect scale!

Warning
Getting scale wrong is the #1 reason prints fail or come out the wrong size. Always double-check dimensions before printing!

The Standard: Millimeters

All 3D printing uses millimeters (mm) as the standard unit.

ObjectTypical Size
Keychain30-50mm
Phone Stand60-120mm
Figurine50-100mm

In Our Editor

  • 1 unit = 1 cm = 10 mm
  • A 2×2×2 cube = 20mm × 20mm × 20mm
Info
The Print Readiness panel automatically shows dimensions in millimeters, so you can verify sizes before exporting.

Print Volume Limits

Most FDM printers: 220 × 220 × 250 mm

The Print Readiness panel will warn you if too large!

Tip
If your model is too large, you can scale it down or split it into multiple parts that can be assembled after printing.