Hardware and engineering · Runs in your browser
STL Viewer
View a local ASCII or binary STL mesh, rotate it and inspect its bounding dimensions.
Files stay in this browser tab.
How to use it
Choose an STL file and its intended display unit. Drag the model to rotate it and use the wheel to zoom.
Worked example
Open a synthetic cube and check its expected dimensions.
What to check
STL does not store a standard unit. This viewer does not certify printability, repair meshes or run a printer.
Build a system for this use case
CAD and slicing workstation
Example OpenFactory build prompt
Build a useful cad and slicing workstation on Ubuntu 24.04 LTS amd64, unless the target installer or embedded board requires its explicitly selected OS.
Use FreeCAD, a slicer, sample meshes and a private project folder. Include only the components this workload needs. Use synthetic sample data and placeholders for site-specific domains, authorized SSH public keys and external integration credentials. Create a non-root operator and keep administrative access private. Never put real credentials, patient records or customer data in the image.
Acceptance checks: open and export a sample model, slice it with an explicit printer profile and keep physical printer qualification pending. Boot the actual artifact and repeat relevant health, persistence and access checks after reboot. Keep hardware-dependent checks pending until the specified equipment is attached.
Deliver the bootable image or reproducible deployment recipe, the software inventory and a test report that separates successful assembly from runtime verification. Ask for missing hardware, storage and access details before making irreversible deployment choices. Do not deploy into production or erase an existing disk without an explicit target.Your tool inputs and files are not included in the build prompt. Review the draft and press Send in OpenFactory.
Source
Three.js: STL format supportOpenFactory · 2026-10-29