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  1. Learn
  2. /File Types
  3. /Stl

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Creator pathMaker path

3D mesh

STL

Stereolithography mesh format for FDM and resin 3D printing—the most common handoff between CAD/sculpt tools and slicers.

★★★★★intermediateCreator✓Maker✓6 min readUpdated Aug 2026

Overview

Stereolithography mesh format for FDM and resin 3D printing—the most common handoff between CAD/sculpt tools and slicers.

Quick facts

Difficulty
Intermediate
Best for
3D mesh
Typical output
STL
Typical cost
Free

Excellent for

  • FDM 3D printing★★★★★
  • Resin SLA/DLP printing★★★★★
  • Prototypes and figurines★★★★★

Compatible with

Production

  • FDM 3D Printing
  • Resin 3D Printing

File types

  • STL

Software

  • Blender
  • Autodesk Fusion
  • FDM 3D printing
  • Resin 3D printing

Pros & cons

Pros

  • ✔FDM 3D printing
  • ✔Resin SLA/DLP printing
  • ✔Prototypes and figurines

Cons

  • ✘Parametric edits after export (use STEP)
  • ✘2D print processes

Creator & maker guides

Preparing artwork

  • Work in formats suited for export: STL

Resolution & export

  • Export in millimeters with applied scale.

Bleed & safe areas

No items yet.

Common mistakes

  • Non-manifold meshes failing in the slicer
  • Wrong scale (meters vs millimeters)
  • Excessive triangle count slowing slicing

Best practices

  1. 1Export in millimeters with applied scale.
  2. 2Run manifold checks before upload.
  3. 3Use STEP when a machinist needs accurate CAD.

Common mistakes

  • ⚠Non

    manifold meshes failing in the slicer

  • ⚠Wrong scale (meters vs millimeters)

    Wrong scale (meters vs millimeters)

  • ⚠Excessive triangle count slowing slicing

    Excessive triangle count slowing slicing

Troubleshooting

SymptomCauseSolution
Non-manifold meshes failing in the slicerSee guides below for contextReview creator/maker tabs and troubleshooting table
Wrong scale (meters vs millimeters)See guides below for contextReview creator/maker tabs and troubleshooting table
Excessive triangle count slowing slicingSee guides below for contextReview creator/maker tabs and troubleshooting table

Helpful tools

  • DPI & resolution calculator

    Soon
  • Image size calculator

    Soon
  • Bleed generator

    Soon
  • Aspect ratio calculator

    Soon
  • Heat press time & temperature

    Soon
  • Sublimation wrap calculator

    Soon

You might also like

  • Blender

    Free 3D suite for modeling, sculpting, rendering, and exporting STL/STEP for printing and CNC.

  • Autodesk Fusion

    Parametric CAD for functional parts, fixtures, enclosures, and CAM-ready models for CNC and printing.

  • FDM 3D printing

    Fused deposition modeling extrudes thermoplastic filament layer-by-layer for fixtures, organizers, props, and functional parts.

  • Resin 3D printing

    UV-cured liquid resin for fine detail miniatures, jewelry masters, and smooth surface models.

On this page

  • Overview
  • Quick facts
  • Best uses
  • Compatibility
  • Pros & cons
  • Creator / Maker
  • Best practices
  • Mistakes
  • Troubleshooting
  • Free tools
  • Related
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  • Related