Files get flagged as unprintable when our engineering team identifies issues that prevent successful 3D printing.
1. Common Reasons for Unprintable Flags
1. Non-Manifold Geometry (File Errors) — Holes, gaps, or overlapping surfaces in the model. Fix: Repair file using software like Meshmixer, Netfabb, or your CAD program's repair tools.
2. Walls Too Thin — Wall thickness below printable minimum (1mm FDM, 0.4mm SLA). Fix: Thicken walls in your CAD software to meet minimum requirements.
3. Unsupported Overhangs — Extreme overhangs (>70°) that cannot be supported, or floating geometry with no connection to the build plate. Fix: Redesign with support-friendly angles or split into printable sections.
4. Features Too Small — Details smaller than printer resolution, such as holes, text, or features under 0.5mm (FDM) or 0.2mm (SLA). Fix: Increase feature size or switch to higher-resolution SLA.
5. Inverted Normals — Surface orientation is backwards (inside-out). Fix: Recalculate normals in your CAD or mesh editing software.
6. Extreme Size — Part exceeds maximum build volume. Fix: Scale down or split into multiple parts for assembly.
2. What Happens Next
When your file is flagged, we'll contact you explaining the specific issue and provide recommendations for fixing the problem. You'll have the option to:
Fix and resubmit (recommended)
Proceed "At Risk" (we'll try to print as-is, but quality not guaranteed)
Pay for design modifications (we fix it for you)
👉 Need help fixing your file? Submit a support ticket with your file and the error description.
Learn more on our website:
Design Guidelines — wall thickness, orientation, support rules by technology
File Requirements — accepted formats, export settings, mesh tips
Upload for a Quote — instant pricing on your CAD file