Sienci Labs LongMill MK2.5 Feeds & Speeds
Pre-configured calculator for the Sienci Labs LongMill MK2.5. Your machine's specs are already loaded. Just pick your bit and material.
Machine Specs
Compare with others →- Work Area
- 12" x 30", 30" x 30", or 48" x 30" (three size variants)
- Drive System
- ACME lead screws (anti-backlash nuts)
- Spindle
- User-supplied router or spindle (65mm/80mm mounts available)
- Max RPM
- Depends on router/spindle choice
- Motion
- V-wheels on aluminum extrusion rails
- Collet
- Depends on router/spindle choice
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Open Calculator for Sienci Labs LongMill MK2.5About the Sienci Labs LongMill MK2.5
- • Lead screws provide better rigidity than belt-driven competitors
- • Three size options accommodate different workshops
- • Exceptional value in the $1,500-2,150 price range
- • Canadian designed and supported
- • Active community forum and Facebook group
- • gSender software is highly regarded (free, user-friendly)
- • Extensive documentation and video tutorials
- • Add-on ecosystem: AutoSpin router, Vortex rotary axis, LaserBeam, ATC
- • MK2.5 is refined version incorporating years of user feedback
- • Touch probe and other accessories available
- • Excellent customer support reputation
- • Can cut wood, plastics, aluminum (with proper speeds/feeds)
- • Price drop in Oct 2025 made it even better value
💡 Quick tip for Sienci Labs LongMill MK2.5 owners
Start with conservative feeds and speeds, especially on a new machine. Run a few test cuts in scrap material before committing to a real project. Our calculator gives you safe starting points. You can always push faster once you know your machine's limits.
Learn More
Feeds & Speeds for Beginners The complete guide: what chipload means, how to read the tables, and when to break the rules. Best CNC Bits for Beginners Which bits to start with, when to upgrade, and how to avoid breaking expensive tooling. Upcut vs Downcut Bits When to use each type, and why it matters more than most beginners think.