Terms of use

Effective 2026-07-03 · Beta software terms, in plain English.

What M-FAB is

M-FAB is CAD/CAM and machine-control software for CNC plasma cutting, currently in beta. Beta means it's genuinely useful and genuinely still being finished — features change, and controller posts marked BETA haven't been verified on every physical machine yet.

The one that actually matters: safety

You are the operator. M-FAB is a tool, not a supervisor. A plasma cutter is a machine that throws 20,000 °F at whatever the G-code says. Always verify a program before running it — use the built-in Verify and Simulate tools, dry-run new posts with the torch off, keep the work area clear, and follow your machine's and cutter's safety instructions. You are responsible for what your machine does; M-FAB is provided as-is, without warranty of any kind, and its authors aren't liable for damaged material, machines, or anything else arising from its use. Don't run G-code you haven't looked at, from M-FAB or anywhere else.

Your account

Keep your password to yourself; you're responsible for activity on your account.
One account per person. Don't scrape, hammer, or attack the service.
Beta access is granted in waves and can be adjusted as the beta needs — being kind to the one person building this helps your odds.

Your work is yours

Parts, projects, and G-code you create with M-FAB belong to you, entirely. M-FAB itself (the software, site, and branding) belongs to its author — don't redistribute or resell it.

Pricing

M-FAB is free during the beta. Paid plans will arrive when it leaves beta; you'll never be silently charged for anything.

Trademarks

Centroid, Langmuir Systems, FireControl, Mach3/Mach4, UCCNC, MASSO, LinuxCNC and other names belong to their owners and are used only to describe compatibility. M-FAB isn't affiliated with or endorsed by any of them.

Changes

These terms may be updated as the beta grows up; the date above is the version marker. Questions? Use the 💬 Feedback button — a human answers.