Wall Thickness Analysis Tool

What Is Wall Thickness Analysis?

Wall thickness analysis checks whether your 3D model has walls thin enough to fail during printing. Every 3D printing technology has minimum wall thickness requirements: FDM typically needs at least 0.8mm, SLA around 0.5mm, and SLS about 0.7mm. Parts with walls below these thresholds may warp, crack, or simply not print at all.

Our free online wall thickness checker lets you upload an STL file, set a custom threshold, and instantly see a color-coded heatmap highlighting thin regions that need attention before manufacturing.

Minimum Wall Thickness by Technology

• FDM — 0.8mm minimum (1.2mm recommended for structural parts)
• SLA — 0.5mm minimum (0.8mm for unsupported walls)
• SLS — 0.7mm minimum (1.0mm recommended)
• MJF — 0.5mm minimum (0.8mm recommended)
• DMLS (Metal) — 0.4mm minimum (depends on material)
• PolyJet — 0.3mm minimum (finest detail printing)

How to Use This Tool

1. Upload your STL file.
2. Set your minimum wall thickness threshold (in mm).
3. Click Calculate to run the analysis.
4. Thin areas are highlighted in the 3D viewer with a color gradient.

No downloads, no signup. Runs entirely in your browser for instant results.

Next Steps

After checking wall thickness, run a full STL analysis for dimensions and volume, or check for mesh errors. When your file is ready, get an instant quote for 3D printing with iamRapid.