Genmitsu PRONAX puts five-tool CNC changes into the job, with two workspaces to choose from

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A CNC router can cut a part with several different bits, but changing those bits can leave you standing beside the machine between stages. Genmitsu’s new PRONAX Spark and Forge take aim at that interruption with an optional five-slot automatic tool changer called NAX5.

The useful distinction is that these are two routers built around the same tool-changing system. Spark offers a longer rectangular work area, while Forge gives you more width. NAX5 belongs to that specific pairing, so this isn’t a tool-changing accessory you can assume will fit an older Genmitsu router.

Price: Spark with NAX5 and hybrid table, $3,299; Forge with NAX5 and hybrid table, $3,599. U.S. second batch, estimated dispatch late October.
Where to buy: SainSmart Spark bundle | SainSmart Forge bundle

Where the tool changer takes over

Think of a wooden sign that needs a broad clearing cut, fine lettering and a shaped edge. Different cutters suit those jobs. With a manual change, the operator has to swap the tool before the next operation can continue. An automatic changer is designed to handle that exchange as part of the programmed job.

NAX5 has five tool slots, with recognition and status indicators for each slot. It communicates with the PRONAX control box over RS-485, and the PRONAX firmware handles the change sequence, tool-length compensation and slot identification. That integration is the reason to look at the complete system rather than just counting how many bits the rack holds.

It also creates a compatibility limit. NAX5 is designed for Spark and Forge, with no launch bundle promised for other Genmitsu machines or third-party controllers. If you already own a smaller router, this announcement doesn’t give you a verified retrofit path.

The rack doesn’t remove all the surrounding work, either. You still need a job planned for its cutters and enough clearance when the spindle moves between slots. The system lifts its Z axis before moving sideways past neighboring tools. Genmitsu’s FAQ describes a configurable lift height, but leaves the maximum usable tool length for the setup guide at launch. That’s a detail to check against the tools you intend to use, particularly if they’re longer than the supplied cutters.

Spark and Forge ask different questions of your bench

Spark’s working area is 600 by 900 mm, with 118 mm of Z travel. Forge changes the footprint to 800 by 800 mm, with the same Z travel. A long narrow panel and a wider square fixture don’t need the same shape of workspace, even when both fit within a broadly similar class of machine.

The outside dimensions are larger than the cutting areas. Spark measures 968 by 1,225 by 510 mm; Forge measures 1,168 by 1,125 by 510 mm. Their listed weights are 62.3 and 68.5 kg respectively. Before choosing by the size of a project, check whether the bench can accommodate the whole machine.

Both use a 2.2 kW air-cooled spindle, ball screws and linear rails, plus closed-loop NEMA24 motors. The spindle is specified for speeds up to 18,000 rpm. Those are the announced hardware specifications; they don’t establish how accurately either router will cut your material or how quickly a finished part will come off the bed.

The control box supports GRBL 1.1f and offline operation. The listed software choices include Candle, Easel and UGS. That gives existing GRBL users a familiar starting point, although the automatic tool-changing sequence still depends on the PRONAX-specific firmware.

Buy the configuration, not just the headline

SainSmart’s September 28 announcement puts PRONAX automatic tool changing at a starting price of $3,699. The live U.S. product pages also show machine-only options: Spark at $2,399 and Forge at $2,599 when checked September 29. Those lower prices shouldn’t be read as the price of a complete NAX5 package.

Each page separately offers a machine with the NAX5 system and a hybrid table. The machine-only box includes the spindle, control box, clamping hardware, a tool-setting probe, cutters and collets; the tool changer and hybrid table are optional. The U.S. selectors currently describe the second batch as expected to dispatch in late October.

Keeping the rack clean is another part of ownership. Genmitsu’s FAQ acknowledges that dust and chips can enter open tool sockets, recommends dust collection and calls for periodic socket cleaning. The tool holders sit away from the main cutting area, but that placement doesn’t make them maintenance-free.

Price: Spark with NAX5 and hybrid table, $3,299; Forge with NAX5 and hybrid table, $3,599. U.S. second batch, estimated dispatch late October.
Where to buy: SainSmart Spark bundle | SainSmart Forge bundle

For someone planning repeated jobs with several cutters, the PRONAX idea is straightforward: put the tool exchange into the machine’s workflow. The choice between Spark and Forge comes down first to the shape of the work you need to fit. After that, check the complete bundle and the final tool-clearance guidance before treating the advertised automatic workflow as a ready-to-run setup.

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