3018 vs 6040 Cnc Router: Which One Should You Buy?

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3018 vs 6040 cnc router: what the two sides mean

The number in a CNC router model name points at the size class. The 3018 family is the compact desktop class: the listings that state one give work areas around 300x180x40mm, frames that fit a desk corner, and weights from 6.64 kg to 23 kg. These machines engrave and cut wood, plastic, acrylic, PCB and soft metals, and their listings pitch them at beginners, schools and small shops. The 6040 family is the full-size step up: a larger bed for bigger sheets, more mass under the gantry and room for heavier cutting. Nothing in the four listings measures a 6040, so pick that side when your parts outgrow a 300 mm bed or when you want to batch more blanks per run. If you are new to the machine type itself, the CNC router machine guide explains how it works and which parts matter.

The gear: four desktop-class machines, ranked

The ranking below uses what each listing publishes: stated spindle power, stated precision, stated work area, frame and motion hardware, and connectivity. Marketing claims are reported as the maker’s claim in neutral words.

1. Genmitsu 3030-PROVer Ultra

The maker lists a 710W digital spindle with a real-time display, claimed at 2.4 times stronger than 300W spindles, plus minus 0.03 mm precision, HG15 dual linear rails and 1204 ball screws on every axis. Control runs through the Genmitsu app, and the listing names Candle, UGS and Easel as compatible software. It ships as two pre-assembled modules with setup stated at 10 minutes and assembly cut by 80 percent, and it carries a side-mounted emergency stop. The spec table lists 230 volts, 20.59 inches by 16.22 inches, 23 kg and an aluminum chassis. It ranks first on the strongest stated spindle, the finest stated precision and the most rigid stated motion hardware.

2. Twotrees TTC3018 Pro

The listing states a 300x180x40mm working area, 0.1 mm positioning accuracy, an all-metal Z-axis with T8 lead screws, and a weight of 15 lb in a 420x355x280mm frame. The kit includes 10 standard cutters, an ER11 collet rated 0.5 to 7 mm, and a 775 spindle motor rated 7000 to 9000 RPM, with a first project stated at 10 minutes. The control board is a 32 GRBL board with a USB data port for direct wired PC connection; the bullets state there is no TF card slot, no Bluetooth and no 2.4G or 5G WiFi, and files move as .nc or Gcode over the attached USB cable. The listing names GRBL, ArtCam and Fusion360 as compatible, and Windows XP, 7, 8 and 10 plus Windows and Mac OS as supported systems. One contradiction to note: the listing’s summary tags mention Bluetooth and WiFi, but the bullets explicitly deny both, so trust the bullets and plan on USB only. It ranks second for a complete stated kit and metal motion parts at the desktop size.

3. Genmitsu Cubiko

The Cubiko arrives pre-assembled inside an integrated enclosure that contains chips and debris and lowers running noise; opening the cover pauses operation automatically. The maker lists auto Z-probing from entered material thickness, smart surface mapping that compensates for small height variations across the work surface, and control through the Genmitsu app, WiFi, compatible PC software or offline control. Stated figures are 96 watts, 9000 rpm, 230 volts, 5 A, 11.06 kg and 13 inches by 12.48 inches, with plus or minus 0.1 mm positioning accuracy. Materials named are wood, acrylic, PCB, plastics and suitable soft metals. It ranks third: the enclosure and probing help beginners, but the stated spindle power and accuracy trail the two machines above.

4. RATTMMOTOR 3018PRO

The listing states a 775 spindle motor at 12 to 24 V, reaching 10000 r/min at 24 V, a 42 stepper motor at 12 V with 1.3 A phase current, 2.1 ohm phase resistance and 0.25 N.m torque. The spec table lists 24 volts, 10000 rpm, 7.09 inches by 1.77 inches and 6.64 kg. It includes an emergency stop button, X, Y and Z axis limit switches, a silent cooling fan, PWM support and an offline controller the board identifies automatically. Engraving materials named are wood, plastic, acrylic, PVC, PCB, carbon fiber, density board, copper and aluminum, while glass, hard metal and jade are named as not engravable. The listing contradicts itself on size: the title states a 300x180x45mm working area while the bullets state 18x10x4.5CM. That unresolved conflict puts it last despite the strong stated spindle speed.

How to choose between the 3018 and 6040 classes

Match the machine to the part, not to the ambition. Work area comes first: a 3018-class bed around 300x180x40mm handles signs, plaques, inlays and small brackets; if your typical part is a full sheet, you are already shopping the 6040 side. Spindle power comes next: 710 W with ball screws and linear rails is the heavy-cutting end of this guide, while a 96 W enclosed machine trades power for quiet bench use. Precision figures are the maker’s claim, stated as 0.03 mm, 0.1 mm and 0.1 mm across the three listings that give one, so compare them as relative rather than absolute. Connectivity decides workflow: wired USB is the baseline, WiFi and app control add convenience, and offline control suits a machine parked away from a PC. The desktop CNC router buying guide walks through the same checklist in more depth, and the mini versus full-size comparison draws the line between the two classes.

FAQ: lasers and CNC

What materials can a 3018-class CNC router cut?

The RATTMMOTOR listing names wood, plastic, acrylic, PVC, PCB, carbon fiber, density board, copper and aluminum, and explicitly names glass, hard metal and jade as not engravable. The Twotrees listing names wood, acrylic, MDF, nylon and aluminum or brass sheet; the Cubiko names wood, acrylic, PCB, plastics and suitable soft metals. Harder stock sits outside what any of these listings claims.

Is WiFi or an app needed to run one?

No. Every listing offers a non-wireless route: wired USB is stated on the Twotrees and RATTMMOTOR listings, offline control on the Cubiko and RATTMMOTOR, and PC software on the Cubiko and 3030-PROVer. WiFi and app control on the two Genmitsu machines are a convenience on top.

What does a stated 0.1 mm accuracy mean?

It is the maker’s positioning claim: how closely the machine states it can place the tool. Smaller stated numbers suggest finer detail work, but treat them as relative between listings since the listings do not publish how the figures were measured.

Is a 6040 worth it over a 3018?

When your parts outgrow a 300 mm bed or you want to batch more blanks per run, yes. Below that line, the 3018 class fits a desk and cuts everything the listings above name. None of the four listings here is 6040-class, so none is scored as one.

Related: CNC 3018 alternatives, desktop CNC machine for beginners and the CNC routers for small business list. For setup, see the 3018 CNC setup guide and CNC bits for the 3018.