Industrial Micro-Precision 3D Printers

Boston Micro Fabrication is the world leader in micro-precision 3D printers utilizing Projection Micro Stereolithography (PµSL) technology.

Introducing the microArch S350

BMF’s highest throughput printer designed for end part production.

Many leading companies worldwide are adopting PµSL to 3D print true microstructures with ultra-high printing resolution (2µm~50µm) and printing tolerance (+/- 10µm ~ +/- 25µm).

Micro-precision 3D printing is the optimal manufacturing process for various use cases across a wide variety of industries. The combination of ultra-high resolution, accuracy, and precision allows for more intricate, exact, and replicable parts.

Boston Micro Fabrication's microArch S230 wins TCT Award 2022

Boston Micro Fabrication (BMF), the pioneer in microscale 3D printing systems, announced that the microArch™ S230, its most advanced and highest-resolution microscale 3D printer, was recognized as a TCT Awards 2022 winner for the TCT Hardware Award – Polymer Systems category. 



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Our Capabilities



  • Tolerance=±0.025mm;
  • Part Size: 24.5mm x 28.3mm x 22mm
  • Integrated forming
  • Complex internal channels
  • Minimum tube diameter = 0.2mm
  • Internal screw threads
  • Resolution: 10μm


  • Tolerance=±0.025mm;
  • Mirror finish, sharp edges, heat resistant
  • 2100 micro holes with a diameter of .35mm and spacing of 50µm
  • Resolution: 10μm


  • Tolerance=±0.025mm;
  • Part Size: 5mm x 4.2mm x 6.1mm
  • Able to print 150 in one day
  • The holes are 0.25mm diameter ±25microns
  • Resolution: 10μm
Medical Devices

Endoscope Shell

  • Tolerance=±0.025mm;
  • Part Size: 9.8mm x 9.8mm x 13.8mm
  • Tube diameter = 1.2mm, length = 4mm, minimum wall thickness = 65 um
  • Several types of complex structures are included
  • Resolution: 10μm


BMF Raises $43M Series C to Continue Driving Convergence of Additive Manufacturing and Miniaturization

Boston Micro Fabrication (BMF), the pioneer in microscale 3D printing systems, today announced the successful closing of a Series C round of funding, totaling $43 million. The round was led by Shenzhen Capital Group Co., Ltd. (“SCGC”).

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Our Products

Request a Benchmark Part

We’d be happy to manufacture a benchmark part so you can assess our quality.

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News • May 3, 2022

Using Micro 3D Printing for Short-Run Production

There is considerable R&D focus on how to make parts bigger with additive manufacturing or 3D printing. At the same time, engineers are designing smaller and more complex products, especially in the medical-device and electronics fields. This trend toward miniaturization also requires that the components and assemblies inside these products are also smaller, and often more complex.

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The quality and accuracy of BMF PµSL parts is very unique, and truly mimic expensive micro molded parts, and now we can have parts ready for test within 1-2 days rather than 1-2 months, as well as reducing the huge costs associated with tooling manufacture and reworking as the new products evolve. We can also explore designs previously out of reach due to manufacturing limitations. Our main focus is to lift our prototyping capabilities to the highest possible level, both in quality and speed. BMF will help us accomplish that.

– Sally van der Most, DSS Manager, Sonion NL

We chose BMF’s microArch 3D Printer due to its ability to replicate critical micro features. Their unique Projection Micro Stereolithography (PµSL) technology prints 3D parts with ultra-high resolution and accuracy, which is key to our business. This is the first 3D printer we’ve encountered that can print micro-precision parts, with the dimensional accuracy and precision that our customers require at this stage of product development. We have put the BMF parts through the same rigorous CT scanning inspection process of our micro molded components and were amazed that dimensionally the parts fell within the tolerances required. Our customers have been equally amazed.

– Donna Bibber, VP of Business Development, Isometric Micro Molding, Inc.

We have been looking for some time for a machine that can reliably produce parts in this size range as we were at the limits of other machines or would have to sink cost into other manufacturing methods- typical micro injection molding or other micro machining activity that can be expensive and prohibitive to R&D iterations. The ability to rapidly produce these types of parts combined with an open ecosystem is unmatched.

– Sam Wilson, STORM Lab UK, Institute of Robotics and Autonomous Sensing, University of Leeds

The parts say it all. The first time you see a part from a BMF printer you will be amazed. 3D printing, until now, has never been able to produce parts of such precision, and accuracy. Being able to capture thin walls and fine features at this scale and resolution, with unmatched reliability, is unprecedented from any 3D printing technology. This will absolutely usher in new industries, that have previously ignored 3D printing, to the world of rapid design iteration.

– James Grimm, Senior Business Development Manager, Empire Group