3040 vs 6040 CNC Router: Which One Should You Buy?

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3040 vs 6040 cnc router: the short answer

At the small end, a machine like the 3018 here fits small signs, nameplates, PCBs and ornaments: the projects that live on a desk. At the large end, the 4030 suits larger signs and batch work because its bed is wider and its structure is heavier. If your biggest planned project fits the smaller bed, the smaller machine saves floor space. If you already turn away work because parts will not fit, the larger machine earns its place by accepting those projects.

The rest of this guide walks through three real machines: a 3018, a 3020 and a 4030. Read them as points along the same ladder you are choosing between, and compare each machine’s stated work area, spindle, structure and control to decide where you belong.

The machines compared in this guide

The large-end reference is the AnoleX 4030-Evo Ultra 2: an 800W trim router with 6-speed settings covering 8000-24000 RPM, an all-metal XYZ axis with HGH-15 dual linear rails and 1204 ball screws, and repeatability accuracy of ±0.005mm per the listing. Its control runs GRBL 1.3a on a 32-bit board with Nema 23 stepper motors, and the listing offers WiFi control through the ESP3D Web UI from a PC, smartphone or tablet, alongside USB and SD card. Stated accuracy for 6061 aluminum cutting and engraving is ±0.02mm, and the listing names metal, aluminum, brass, wood, acrylic and PCB as the materials it handles.

The mid-size reference is the Genmitsu 3020-PRO MAX V2, with a working area of 11.8″ x 8.1″ x 3.1″ on a 4040 Y-axis profile. The listing describes a one-piece machined and molded aluminum spoilboard with a measurement scale, an upgraded dual steel X-axis guide rail and a new X-axis back plate. The package includes an offline controller, 6 limit switches, an emergency stop switch and a photoelectric Z-probe. Maximum rotational speed is 12000 rpm, and the spec table states 0.4 hp and 230 volts. The listing also adds a dedicated 3 Pin Laser Port, an Air Assistance Pump Port and an MPG Port.

The small-end reference is the Twotrees TTC3018 Pro: a 300x180x40mm working area in a 420x355x280mm footprint, and at 15 pounds the lowest-weight machine in this guide. The all-metal Z-axis uses T8 backlash-eliminating lead screws with 0.1mm positioning accuracy. The 775 spindle motor is rated 7000-9000RPM, the ER11 collet covers 0.5-7mm, and the kit includes 10 cutters. Control is GRBL with a USB wired connection only: the bullets explicitly rule out a TF card slot, Bluetooth and 2.4G/5G WiFi. Stated software compatibility covers GRBL, ArtCam and Fusion360 on Windows and Mac. The listing contradicts itself on connectivity: the summary data names Bluetooth and WiFi, while the bullets rule both out and state USB transfer only. We trust the bullets.

What actually changes between the sizes

Work area is the headline, but structure and spindle change with it. The small-end Twotrees runs a 775 spindle motor rated 7000-9000RPM; the mid-size Genmitsu reaches 12000 rpm maximum; the large-end AnoleX carries an 800W trim router with 6-speed settings up to 24000 RPM. Heavier machines bring heavier structure: dual HGH-15 linear rails and 1204 ball screws on the AnoleX, a 4040 Y-axis profile on the Genmitsu, and an all-metal Z-axis with T8 lead screws on the Twotrees. In plain terms, the small end trades work area for a desk-corner footprint and a 15-pound carry, while the large end trades floor space for the capacity to shape the metals its listing names.

Control is the other change. The AnoleX offers WiFi through the ESP3D Web UI alongside USB and SD card, the Genmitsu ships an offline controller, and the Twotrees is USB-wired only. If your computer sits next to the machine, any of the three works. If you want to run a long job without a tethered PC, the offline controller and the WiFi option settle it.

Which size fits your shop

Match the machine to the work you already do. If your bench holds signs, nameplates, small ornaments or PCBs, the small end keeps the machine on a desk corner: the Twotrees listing claims a 420x355x280mm footprint and a first project in 10 minutes from its all-in-one kit. Our guide to choosing a desktop CNC router walks first-time buyers through the same decision.

If you cut panels, batch signs or shape the metals the listings describe, the large end earns its floor space. The AnoleX lists an 800W trim router, dual linear rails with ball screws and WiFi or SD card control, so long jobs run without a tethered computer. The middle path is the Genmitsu: a desktop-size machine with an offline controller, 6 limit switches and an emergency stop, giving standalone operation without the largest machine’s footprint. For the material side of the choice, see our hardwood vs plywood for CNC comparison.

FAQ: lasers and CNC

Can the small machine cut aluminum?

The listings for the small end say yes within limits. The Twotrees bullets state support for aluminum and brass sheet processing with 0.1mm positioning accuracy, and the AnoleX listing names metal and aluminum with stated accuracy of ±0.02mm on 6061 aluminum. Start with light passes and the speeds the machine’s own documentation recommends.

What software works with these machines?

All three speak GRBL. The Twotrees listing names GRBL, ArtCam and Fusion360 on Windows and Mac; the Genmitsu builds on open-source Grbl V1.1; the AnoleX runs GRBL 1.3a and lists compatibility with GRBL software such as UGS, Fusion360, VCarve, Easel and Lightburn on Windows, Linux and Mac. Pick the software you already know: the controller matters less than the toolpath.

Can I run these machines without a computer attached?

Per their listings: the Genmitsu ships an offline controller, and the AnoleX supports control through the ESP3D Web UI over WiFi or from an SD card. The Twotrees is USB-wired only: its bullets rule out Bluetooth and wireless, so the computer stays attached.

How much assembly do the listings describe?

The AnoleX arrives with major components pre-assembled, clear cable management, a paper manual and an assembly video. The Genmitsu ships a pre-assembled XZ gantry module and base assembly with pre-organized wiring, leaving final connections to the ports. The Twotrees is a full assembly kit of 40+ precision components; its listing claims a first project in 10 minutes.

Which machine fits a small workshop?

By the stated figures, the Twotrees: 15 pounds and a 420x355x280mm footprint that the listing says fits any desk corner. The Genmitsu mounts its power supply on the X-axis backplate to maximize workspace utilization. The AnoleX is the largest here at 24.8″W x 20.47″H and 38 kg, so it wants a dedicated bench.

Does the Genmitsu support a laser module?

The listing states a dedicated 3 Pin Laser Port among its extended function ports, alongside an Air Assistance Pump Port and an MPG Port. It does not state which laser modules fit, so confirm compatibility with the module maker before buying one.

Related: the 3020 vs 4040 CNC router comparison and our respirator guide for CNC router work. Also see the CNC router hub.