PROFESSIONAL 3D PRINTED CNC | Open-source | NEW!

https://www.nalcnc.com
Open-source large format CNC

Hello. This video, in slideshow mode, presents the latest optimizations made to the January 2025 NALCNC prototype, developed in Bourges, France. The new NALCNC-PRINT is based on a kit consisting of three technical modules: one YZ module and two X-X modules. With just one kit, you can very easily build powerful, large-format CNC (3- or 4-axis). High-performance, fast CNC designed for intensive use. The three core modules are optimized engineering components, manufactured using FDM 3D printing. They are fully reinforced with steel threaded rods, strategically positioned and screwed in after printing.

These three core modules provide great modularity and make it easy to create robust, large-format moving gantry CNC systems. Assembly has been simplified as much as possible: each kit includes 4 guide tubes – round Ø 30, 40 or 50 mm, or square Q 30, 40 or 50 mm – and 3 SFU1610 ball screws. The lengths of the guide tubes and ball screws for the X-X and Y axes directly determine the working area. You simply choose these lengths to get the machining area perfectly suited to your needs.

The modules are compatible with steel guide tubes, round or square, in three specific sizes, with wall thickness between 2 and 4 mm. Thus, each NALCNC-PRINT kit consists of: - the three core modules: 1 YZ module and - 2 X-X modules, - 4 steel guide tubes, - 3 SFU1610 ball screws. This system allows the creation of CNC machines with machining areas ranging from 500 × 500 mm up to 1500 × 3000 mm, and even larger on request. Six kit configurations are available: three for round-tube OX versions and three for square-tube QX versions, so you can build the CNC or milling/cutting center that exactly matches your requirements.

You can also opt for a complete, ready-to-use CNC machine, offered in three standard sizes:
Model 1010 OX and 1010 QX: working area 500 × 500 mm (Y-axis tubes: 1.00 m each; X-axis tubes: 1.00 m each).
Model 1220 OX and 1220 QX: working area 700 × 1500 mm (Y-axis tubes: 1.20 m each; X-axis tubes: 2.00 m each).
Model 1730 OX and 1730 QX: working area 1200 × 2500 mm (Y-axis tubes: 1.70 m each; X-axis tubes: 3.00 m each).

The three core modules of each NALCNC-PRINT kit – one YZ module and two X-X modules – are manufactured in-house by NALCNC. This in-house production ensures excellent manufacturing quality, which directly affects the geometry and rigidity of the assembled moving gantry, as well as the overall performance of the CNC machine. The precision of the assemblies, achieved by inserting the steel threaded rods, has an even greater impact on final performance. On the other hand, all other elements of the NALCNC ecosystem are open-source under OCL license:

Whether you choose a kit to assemble or a complete ready-to-use machine, NALCNC-PRINT systems are highly compatible with a wide range of controllers, from economical open-source solutions to professional standalone systems that don’t require a dedicated PC.

Among the popular open-source options:
Classic GRBL on Arduino, ideal for simple, low-cost setups.
32-bit GRBL on ESP32 or équivalents.
FluidNC, an advanced firmware for ESP32 with web interface and standalone execution via SD card.
the MASSO CNC Controller, a premium Australian system that is fast, reliable, with built-in screen and support for up to 5 axes.
And various high-performance Chinese models available on Amazon or AliExpress, such as the DDCS Expert or DDCSV series, often equipped with a TFT screen, 3–5 axis support, and pulse rates up to 1 MHz.

The linear mechanics of the NALCNC-PRINT OX and QX kits and machines.
Starting with the Z axis. The Z-axis linear mechanics are fully integrated into the YZ module. Movement is provided by an SFU1204 ball screw rotating in an SFU1204 nut. The screw is driven by a system consisting of two HTD5M15 pulleys, a closed belt, and an NEMA 23 (stepper or hybrid Closed-loop).

For the X and Y axes.
Linear guidance is based on a three-point bearing system on round or square tubes, regardless of kit type or size. The bearings are already integrated into the X-X and YZ modules, greatly simplifying gantry assembly. A rotating nut on fixed screw mechanism is built into each YZ and X-X module. You simply install the SFU1610 ball screw and its nut during final assembly.


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