The Sienci Labs LongMill MK2 is a hobby-grade benchtop CNC router designed for accessibility, reliability, and ease of use. Built with extruded aluminum rails, fully supported Y-axes, 1/4-inch steel gantries, and high-power NEMA 23 stepper motors, the LongMill MK2 delivers strong rigidity and precision at an affordable price point.
The machine uses a lead screw motion system with anti-backlash nuts on all axes, providing accurate positioning without the cost of ball screws. V-wheel linear bearings on the X and Y axes and MG-12 type linear guides on the Z-axis provide smooth, reliable movement. Cutting speeds reach approximately 150 inches per minute.
This LongMill is equipped with a Makita RT0701C compact trim router mounted in a 65mm mount. The router provides variable speed from 10,000 to 30,000 RPM and accepts 1/4-inch shank bits. Router speed is set manually via the dial on the router body and must be turned on and off manually at the start and end of each cutting program.
The machine cuts a wide range of materials including softwoods, hardwoods, MDF, plywood, plastics, foams, acrylics, and aluminum (with patience and appropriate feeds/speeds). The working area is approximately 30 by 30 inches with a Z-axis travel of approximately 4.5 inches.
The LongMill is controlled using gSender, Sienci Labs' free CNC control software, running on the adjacent computer. Designs are created and toolpaths generated using VCarve CAM software. Reservation is required before use.