Sienci Labs AltMill MK2 4x4 Feeds & Speeds
Pre-configured calculator for the Sienci Labs AltMill MK2 4x4. Your machine's specs are already loaded. Just pick your bit and material.
Machine Specs
Compare with others →- Work Area
- 49" x 49" x 5.5" (4x4), also available in 4x6 and 4x8
- Drive System
- Ball screws on all axes
- Spindle
- 80mm spindle mount (spindle sold separately - 1.5kW, 2.2kW, or 2.2kW ATC options)
- Max RPM
- Depends on spindle (typically 24,000 for air-cooled)
- Motion
- HGR15 linear rails (industrial-grade)
- Collet
- Depends on spindle (ER20 for 1.5kW/2.2kW options)
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Open Calculator for Sienci Labs AltMill MK2 4x4About the Sienci Labs AltMill MK2 4x4
- • Production-level cutting speeds (~600 inches/minute)
- • Closed-loop motors auto-correct positioning and auto-stop when necessary
- • Low maintenance design for production work
- • Y-axis auto-squaring; limit switches by default
- • Tram adjustment capabilities
- • Cuts hardwoods, plastics, foams, composites, aluminum, even steel
- • Footprint: 59" wide x 62" deep (4x4)
- • Sturdy metal legs with shelving capability underneath
- • Inductive sensors for homing
- • Ships within 2-3 weeks
💡 Quick tip for Sienci Labs AltMill MK2 4x4 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.