A comprehensive look at building the LDO Micron+ — the community-beloved miniature 3D printer kit that packs Voron-grade performance into a 180mm build volume.

What is the LDO Micron+?

The LDO Micron+ is an open-source DIY 3D printer kit designed by HartK and produced by LDO Motors. It's essentially a miniature Voron V2 — the same CoreXY kinematics, the same rigid aluminium extrusion frame, just in a much smaller package. The 180mm³ build volume makes it perfect for compact, high-quality prints without the footprint of a full-size machine.

Unlike fully assembled printers, the Micron+ ships as a kit requiring assembly. But that's the point — building it yourself means you understand every bolt, wire, and component, making maintenance and upgrades far easier down the road.

What's in the Kit

The Micron+ R1 kit includes everything needed to get running, minus printed parts and a hot end. Here's what's included:

  • LDO Motors frame components — precision-cut aluminium extrusion and plates
  • Honeybadger upgrades — popular community modifications pre-integrated for reliability
  • Belts, pulleys, and hardware — stainless steel fasteners, GT2 timing belts
  • Electronics bay — integrated mount for control board
  • Panel kit options — black or clear panels available separately

The Build Experience

Building a Micron+ is a rewarding weekend project. The community has produced extensive documentation and video guides. Key steps include:

Frame Assembly: The aluminium extrusion frame uses a proven Voron-style layout. Follow the official build guide and take care to square the frame early — corrections later are painful.

CoreXY Belt Routing: The Micron+ uses the same belt path as larger Voron machines but at a smaller scale. Proper tension is critical for print quality. The Honeybadger upgrade kit includes upgraded idlers for smoother operation.

Electronics: Most builders pair the Micron+ with a BTT EBB36 or similar board running Klipper. The Raspberry Pi Zero 2 W is a popular controller choice for this size of machine.

Hot End Selection: The Micron+ is compatible with most standard hot ends. The Dragon HF (High Flow) and Rapido are popular choices among builders seeking high-flow capability in the compact form factor.

Performance and Print Quality

With the right tuning, the Micron+ produces prints that rival machines costing twice the price. The rigid frame eliminates vibration artifacts, and the CoreXY motion system delivers fast, precise movement. Typical results include:

  • Layer height: 0.12mm–0.28mm depending on nozzle
  • Print speed: 150–250mm/s with the right profile
  • Surface quality: Exceptional at lower speeds, clean even at moderate speeds

Who Should Build a Micron+?

The Micron+ is ideal for:

  • Experienced beginners: You know what a 3D printer is, you're comfortable with some assembly, and you want something better than an Ender 3
  • Voron enthusiasts: You love the Voron ecosystem but don't have room for a 350mm machine
  • Upgraders: You've outgrown your entry-level printer and want a machine you truly understand

If you're brand new to 3D printing with zero experience, a fully assembled printer is probably a better starting point. But if you're willing to follow guides and learn, the Micron+ build process itself is educational.

Where to Buy

The LDO Micron+ is available from communitytrusted retailers including:

  • Fabreeko: https://www.fabreeko.com/products/ldo-micron-3d-printer-kit-180mm
  • West3D: https://west3d.com/products/ldo-micron-3d-printer-kit-micron-plus-180
  • KB-3D: https://kb-3d.com/store/shop-full-build-kits/

Community Resources

The Micron+ has a thriving community. Key resources include the Voron Discord server, dedicated Micron+ build logs on Reddit's r/3Dprinting, and YouTube build series from community creators covering the full assembly process.

The open-source nature means the design is constantly improving. Hardware revisions are community-driven, and printed part files are updated regularly based on real-world testing.

Verdict

The LDO Micron+ is one of the best DIY 3D printer kits available in 2026. It delivers genuine Voron-grade performance in a compact footprint, and the build process is a rewarding introduction to machine assembly. At around $300-400 for the kit (plus hot end and printed parts), it offers exceptional value for the performance it delivers.

For makers ready to build rather than buy assembled, the Micron+ is an easy recommendation.

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