MillRight CNC Mega V2

About the Machine

The Mega V 2 covers three sizes on one build: Standard at 19 x 19 x 5.25 in (6.25 in Z stroke), XL at 35 x 35 x 5.25 in (6.25 in Z stroke), and XXL at 50 x 50 x 5.25 in (6.25 in Z stroke). It runs high-speed steel rack-and-pinion drive on X and Y with an improved screw-drive Z axis and linear profile rails on every axis, and ships with a router mount for the Makita RT0701C or DeWalt DW618 (router not included) or an optional 1.5kW or 2.2kW VFD spindle, with a 2.2kW automatic tool changer option. Assembly is required; instruction booklets are provided.

Cut Settings on this Machine

Every cut starts with one formula: Feed Rate = Spindle Speed (RPM) x Chip Load x Number of Cutting Edges (flutes). Chip load is the thickness of material each cutting edge removes in one revolution of the bit. This number comes from the manufacturer of the bit, which publishes a chip-load chart for each bit diameter and material. Look up your exact bit and material, start from the middle of the published range, and you have the third number in the formula. The chart below shows the recommended spindle speed for each material and bit type.

If this machine's spindle cannot reach the listed speed, run the spindle at its maximum and control the cut with feed rate. For 65mm trim routers, the DeWalt DW611 dial maps to: 1 = 16,000; 2 = 18,200; 3 = 20,400; 4 = 22,600; 5 = 24,800; 6 = 27,000 RPM.

The Mega V 2’s spindle depends on what you order: a router mount with no spindle included, or an optional 1.5kW or 2.2kW VFD spindle. Check whichever unit you have for its actual RPM against the chart. Its high-speed steel rack-and-pinion drive and linear profile rails on every axis are built for real rigidity. A truly rigid machine with a powerful spindle can cut as deep as the bit is wide in a single pass, but that takes real spindle torque, a drive train and clamps that hold firm, a gantry that will not flex, and enough mass to soak up vibration. With the VFD spindle option, the Mega V 2 gets close to that bar; with just a router mounted, treat it more conservatively and take shallower passes. Push too deep and the bit deflects and chatters, leaving scalloped edges, or it rubs instead of cutting and burns the material. The fastest way to dial in a cut is to see what has already worked for other people.

Worked example for feed rate: 1/8in (3.175mm) two-flute solid carbide end mill in hard wood. The chart says 16,000 RPM. With the bit maker’s 0.025mm per tooth (0.0010 in): 16,000 x 0.025 x 2 = 800 mm/min (31 in/min) feed. For depth per pass, start shallow and check Community Cut Settings in Easel for what works on the MillRight CNC Mega V2. If the cut sounds strained, reduce the depth, not the feed. Slowing the feed below the chip load makes the bit rub instead of cut.

Community Cut Settings shows the spindle speed, feed rate, and depth per pass other makers actually run for your machine, material, and bit.