The LongMill MK3 30x30 CNC Router is designed to make CNC machining approachable, affordable, and rewarding from your very first project. Whether you're a hobbyist, woodworker, maker, educator, or someone looking to start a CNC side business, the LongMill MK3 provides the performance, reliability, and ease of use needed to turn ideas into finished projects quickly.
Built with beginners in mind but engineered to deliver production-level performance, the LongMill MK3 combines a rigid frame, linear guide rails, closed-loop stepper motors, and advanced motion control features into a CNC machine that is ready to grow alongside your skills.
With a generous 32" x 32" cutting area, industry-leading cutting speeds, and the ability to machine everything from hardwoods and plastics to acrylics and aluminum, the LongMill MK3 offers exceptional value for CNC users looking for professional capabilities without professional-level pricing.
Many entry-level CNC machines are quickly outgrown as users gain experience. The LongMill MK3 was designed differently.
This machine combines beginner-friendly setup with advanced features often found on significantly more expensive CNC systems, giving you room to grow without needing to upgrade after a few projects.
Perfect for:
The LongMill MK3 arrives largely pre-assembled, helping reduce setup time and frustration.
Benefits include:
Spend less time building your machine and more time creating with it.
Unlike many hobby CNC machines, the LongMill MK3 uses a closed-loop stepper motor system.
This technology monitors machine movement and can detect when steps are lost, helping improve reliability and giving users greater confidence during long carving sessions.
Benefits include:
The LongMill MK3 utilizes a lead screw and linear guide rail system with anti-backlash nuts to provide smooth, precise movement.
Features include:
These production-style features help deliver accuracy and repeatability that hobby users can appreciate and advanced users can depend on.
The LongMill MK3 is capable of cutting at speeds up to 275 inches per minute, making it one of the fastest machines in its class.
Machine Specifications:
The LongMill MK3 is capable of machining a wide variety of materials including:
This versatility makes it an excellent platform for learning, experimentation, and production work.
The LongMill MK3 has earned a reputation as one of the best values in CNC machining because it balances affordability, capability, and support.
It offers:
Yes. The LongMill MK3 was specifically designed to be approachable for new CNC users while offering advanced features that allow you to continue growing your skills without immediately needing a machine upgrade.
The LongMill MK3 is ideal for signs, furniture components, cutting boards, home décor, custom gifts, cabinetry, prototypes, and many other woodworking and CNC projects.
Yes. The LongMill MK3 is capable of machining aluminum when proper tooling, feeds, speeds, and workholding techniques are used.
The machine can handle softwoods, hardwoods, plywood, MDF, plastics, foams, acrylics, and aluminum.
Closed-loop stepper motors monitor machine movement and help detect when steps are lost, improving reliability and project consistency.
The LongMill MK3 arrives largely pre-assembled and many users can be up and running in approximately one hour.
Absolutely. Many users operate LongMill machines for side businesses and production work thanks to its combination of affordability, reliability, and cutting performance.
It's a machine that helps you start creating quickly while giving you plenty of room to grow as your CNC journey evolves.
Item SKU: LongMill MK3 3030
This product is not an IDC Woodcraft branded product and is manufactured by Sienci.
This product does not qualify for the IDC Woodcraft 90 day guarantee and is subject to the warranty and return policies of this vendor.
Loading Specs and Settings
For Vectric, Fusion 360, Carbide Create and Carveo users, get the latest CNC router bit tool database by going to this page
For CNC’s with routers, refer to this PDF download feeds & speeds table
