Keeping with the ‘aluminum has no place on the frame of a CNC mill’ theme, the X axis and Y axis carriages are made out of gray cast iron. It is machined and 100% inspected to exacting standards to hold a pair of 20mm linear guideways right where they need to be for supreme accuracy.

The heavy duty gantry is constructed from 5/16” steel plate all the way around for maximum bending and torsional stiffness. There are no aluminum extrusions found here. Riding on the Y axis rails is the beefy X Axis gantry. The direct connection to the concrete base structure keeps deflections to a bare minimum while providing a direct path for vibration damping. To these mount the 1” thick steel Y axis rails containing the 20mm linear guideways. The legs come pre-drilled for attaching accessories such as leveling feet, computer stand, or touch screen controller (all available for purchase).Īlso encased in the concrete base structure are the steel Y axis rail supports. This means you don’t need to buy or build a workbench like most hobby machines. The base is designed to be skim cut flat by the user to produce a laser flat surface that is exactly parallel to the XY plane of the machine.įour steel legs support the machine making it a freestanding unit. The table is rigidly encased in 300 pounds of high strength interlocking concrete to promote excellent rigidity and stability. MR-1’s table is a nearly ¾” thick plate of 6061-T6 aluminum that is drilled and tapped for ¼-20 tooling holes in a 2”x2” grid pattern making workholding a breeze. MR-1 is not a toy it is a machine that you can rely on to make real metal parts that require excellent finishes, precision, and accuracy. The MR-1 Gantry Mill stands alone as the only machine in its price class that is capable of productively machining aluminum, steel, titanium, and stainless steel.

Co-Planarity Check Gage - now standard on MR-1.

To learn more about the concrete reinforced base design and more information on this assembly step, please visit MR-1 Base Design. Seven 50lb bags of concrete must be purchased separately from a local home improvement store. Note: Does not include concrete required for the base.

All miscellaneous parts and hardware required to assemble a ready-to-run machine.

⅛ and ¼ Precision ER20 Collets and 2 Collet Wrenches.

3.4hp 220V AC Servo spindle with 0-8000 RPM speed range - adjustable in software.

Motion Electronics package including the following: Waterproof NEMA 23 stepper drive motors, Limit switch kit for each axis, Touch Probe and Tool Setter ports, Expansion ports for future add-ons, E-stop Switch, and High Speed USB Connectivity (Windows or Mac Compatible).

T slotted aluminum extrusions 1.5 cad