Open-Source Licenses
This service relies on the following open-source projects. We are grateful to their authors and communities.
OrcaSlicer
OrcaSlicer is a G-code generator for 3D printers, used by this service to slice uploaded models and compute print parameters.
- License: GNU Affero General Public License v3 (AGPL-3.0)
- Source: github.com/SoftFever/OrcaSlicer
Gmsh
Gmsh is a finite-element mesh generator used to convert STEP/STP CAD files into STL meshes for 3D printing.
- License: GNU General Public License v2+ (GPL-2.0-or-later)
- Source: gmsh.info
- Citation: C. Geuzaine and J.-F. Remacle, “Gmsh: a three-dimensional finite element mesh generator with built-in pre- and post-processing facilities”, International Journal for Numerical Methods in Engineering, 79(11), pp. 1309–1331, 2009.
Three.js
Three.js is a JavaScript 3D library used to render the interactive model preview in your browser.
- License: MIT License
- Source: threejs.org
PrusaSlicer
PrusaSlicer is a G-code and SL1 generator for 3D printers, used by this service to slice resin (mSLA) models and extract layer data for quoting.
- License: GNU Affero General Public License v3 (AGPL-3.0)
- Source: github.com/prusa3d/PrusaSlicer
UVtools
UVtools is a tool for MSLA/DLP resin print file analysis, used by this service to validate sliced SL1 output and extract volume data.
- License: MIT License
- Source: github.com/sn4k3/UVtools
Trimesh
Trimesh is a Python library for loading and processing triangular meshes, used by this service for geometric risk assessment and mesh analysis.
- License: MIT License
- Source: trimesh.org
Next.js
Next.js is a React framework for server-rendered web applications, used to build the front-end of this service.
- License: MIT License
- Source: nextjs.org
React
React is a JavaScript library for building user interfaces, used as the core UI framework for this service.
- License: MIT License
- Source: react.dev
Fastify
Fastify is a high-performance Node.js web framework, used to power the mSLA slicing API.
- License: MIT License
- Source: fastify.dev
Flask
Flask is a lightweight Python web framework, used to power the FDM slicing and risk assessment APIs.
- License: BSD 3-Clause License
- Source: flask.palletsprojects.com
NumPy
NumPy is a Python library for numerical computing, used for mesh geometry calculations in the slicing and risk assessment engines.
- License: BSD 3-Clause License
- Source: numpy.org
SciPy
SciPy is a Python library for scientific and technical computing, used for spatial analysis in the risk assessment engine.
- License: BSD 3-Clause License
- Source: scipy.org
Caddy
Caddy is a web server with automatic HTTPS, used as the reverse proxy and TLS termination layer for this service.
- License: Apache License 2.0
- Source: caddyserver.com
ClamAV
ClamAV is an open-source antivirus engine, used to scan uploaded files for malware before processing.
- License: GNU General Public License v2 (GPL-2.0)
- Source: clamav.net
Grafana Loki
Grafana Loki is a log aggregation system (with Promtail as the log shipper), used for centralised logging and diagnostics.
- License: GNU Affero General Public License v3 (AGPL-3.0)
- Source: grafana.com/oss/loki
All of the above tools are invoked as standalone processes, server-side services, or client-side libraries and are not modified. Their respective source code is available at the links above.
Research Bibliography
Our automated risk assessment algorithms are informed by the following peer-reviewed research. We gratefully acknowledge the authors whose work underpins our geometric analysis engines.
SLS Risk Assessment
Depowderability, thin-wall detection, warpage prediction, and scan-complexity scoring for Selective Laser Sintering.
Josupeit, S., Ordia, L., & Schmid, H.-J. (2016). “Modelling of Temperatures and Heat Flow within Laser Sintered Part Cakes.” Additive Manufacturing. doi:10.1016/j.addma.2016.06.002
Used for: warpage risk prediction — position-dependent thermal gradients and height-based cooling risk
Li, J., Yuan, S., Zhu, J., Li, S., & Zhang, W. (2020). “Numerical Model and Experimental Validation for Laser Sinterable Semi-Crystalline Polymer: Shrinkage and Warping.” Polymers, 12, 1373. doi:10.3390/polym12061373
Used for: warpage risk prediction — cross-section analysis for PA12 shrinkage and crystallization-induced strain
Häfele, T., Schneberger, J.-H., Buchholz, S., Vielhaber, M., & Griebsch, J. (2025). “Evaluation of Productivity in Laser Sintering by Measure and Assessment of Geometrical Complexity.” Rapid Prototyping Journal. doi:10.1108/RPJ-07-2024-0289
Used for: scan complexity scoring — SA/V ratio and topological genus as proxy for contour/hatch complexity
Tedia, S., & Williams, C. B. (2016). “Manufacturability Analysis Tool for Additive Manufacturing Using Voxel-Based Geometric Modeling.” Proceedings of the 27th Annual International Solid Freeform Fabrication Symposium, Austin, TX. (no DOI assigned — SFF Symposium proceedings paper)
Used for: depowderability analysis — trapped powder detection via voxel void connectivity
mSLA Complexity Assessment (AMCI)
Additive Manufacturing Complexity Index adapted for masked stereolithography resin printing.
Matoc, D. A., Maheta, N., Kanabar, B. K., & Sata, A. (2025). “Quantifying Manufacturability Complexity Index: A Case Study of VAT Photopolymerization Additive Manufacturing.” 3D Printing and Additive Manufacturing, 12(6), 670–685. doi:10.1089/3dp.2024.0059
Used for: AMCI complexity scoring — geometry, feature, and manufacturability sub-indices (0–100 scale)
FDM Risk Assessment
Overhang detection, bed-adhesion analysis, warping prediction, and fragility scoring for Fused Deposition Modeling.
Budinoff, H. D., & McMains, S. (2021). “Will It Print: a Manufacturability Toolbox for 3D Printing.” International Journal on Interactive Design and Manufacturing (IJIDeM), 15, 613–630. doi:10.1007/s12008-021-00786-w
Used for: overhang and warping methodology — face-normal dot product with build direction, cross-section area analysis
Henn, J., Hauptmannl, A., & Gardi, H. A. A. (2025). “Evaluating the Printability of STL Files with ML.” arXiv preprint. doi:10.48550/arXiv.2509.12392
Used for: FDM risk scoring — ML-based printability evaluation of STL geometry (overhangs, thin walls, bridging, warping)
General AM Manufacturability
Cross-technology surveys and meta-reviews on automated printability analysis.
Parry, L. (software). “PySLM (Python Library for SLM/DMLS/SLS Toolpath Generation).” (no DOI assigned — cite as software/repository)
- Source: github.com/drlukeparry/pyslm
Adam, G. A. O., & Zimmer, D. (2015). “On Design for Additive Manufacturing: Evaluating Geometrical Limitations.” Rapid Prototyping Journal, 21(6), 662–670. doi:10.1108/RPJ-06-2013-0060
Used for: design rule thresholds — minimum wall thickness, hole diameter, and overhang angle limits per technology