***Pre-orders start October 29. Come back soon!***
The AltMill 4×8 is the next generation of prosumer CNCing. Designed for power, precision and production, the 4×8 has the reliability and rapidity professionals need, and the value and rigidity advanced users want. Built for sheet goods, the AltMil 4×8 is a turnkey CNC that makes large format cutting a breeze.
Highlights include:
- Production level cutting speeds (approx. 1,000 inches per minute)
- Closed loop motor system on all three axis to auto-correct positioning and auto-stop when necessary (reliable for production style work)
- Requires little maintenance during project production
- Advanced, production-style features including Y-axis auto-squaring; limit switches by default; and tram adjustment capabilities
- Cuts materials ranging from hardwoods to plastics, foams, composites, aluminum – even steel
- Support for 80mm spindles and routers
- 49.8″ x 104″ working area with a max Z-height of 8.3″ (1265 mm × 2640 mm × 210 mm)
- Footprint of roughly 66″ wide and 114″ deep
The AltMill 4×8 comes with a standard 80mm spindle mount only. It does not come with a spindle or an Automatic Tool Changer system, which must be purchased separately.
Quick highlights:
- 104" Y-Axis Travel
- 50" X-Axis Travel
- 8" Z-Axis Clearance
- High-Torque Closed-Loop Stepper Motors
- 1,000 IPM Traverse Speed
- Rack & Pinion with Gearbox Reduction on Y-Axis
- Precision Ball Screws on X & Y Axes
- SLB-Ext 32-bit Controller with grblHAL Firmware
- 120VAC, Single Phase 4A Power
In depth specs:
- Footprint: Roughly 66″ wide and 114″ deep
- X, Y, Z Axis Working Area: 1265 mm × 2640 mm × 210 mm (49.8″ x 104″ x 8.3″)
- Z-axis Maximum Stock Clearance: 203 mm (8″)
- Rapid Traverse Speed: Approx. 25,000 mm/min (1,000 IPM) in Y-axis; 16,000mm/min (590 IPM) in X-axis; 6,000mm/min (236 IPM) in Z-axis
- Repeatability: ±0.05 mm (±0.002″)
- Motion System: Rack and pinion using precision gearbox reduction on Y-axis; 16mm precision ball screw on X-axis; 12mm precision ball screw on Z-axis
- Linear Motion: 15mm profiled linear guide rails and bearing blocks on all axes
- Drive Motors: High-Torque NEMA 23 Closed-Loop Stepper Motors. 3NM torque on Y-axis; 2NM torque on X and Z axes.
- Control System: SLB-Ext 32-bit controller with grblHAL firmware
- Power Requirements: 120VAC, Single Phase, 4A (Spindle power requirements listed separately)
- Weight: Approximately 400lbs as assembled, not including weight of add-ons such as spindles
- Spindle Mount: Supports 80mm spindles and routers
- Frame Construction: Rigid frame and linear motion design using HGR15 linear guides and ball screws on all axis mounted to a custom-designed, machined aluminum extrusion; with sturdy metal legs with the ability to add 4ft wide shelving underneath for sheet goods
Pre-orders for the 4×8 start October 29, with expected delivery date to begin late February/early March 2026. For more info on expected shipping and delivery times, please see the Sienci Order Status page
Altmill
Item SKU: ALTMILL48
This product is not an IDC Woodcraft branded product and is manufactured by Sienci.
This product does not qualify for the IDC Woodcraft 90 day guarantee and is subject to the warranty and return policies of this vendor.
