An open design library for 3D‑printed microfluidics.

We design tiny plastic chips that move small amounts of liquid through channels thinner than a hair. Browse the designs, make your own in your browser, and print them.

Browse the chip library Design a chip

Everything here is free to use.

The pump-and-mixer chip, built up layer by layer as the printer builds it: a computer drawing of its channels and chambers, in orange, inside its see-through body. — See how it's built

Designed at the State of Utah Center of Excellence for Biomedical Microfluidics, University of Utah, and printed at the Nordin Microfluidic and 3D Printing Lab, Brigham Young University.

Featured from the library

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Photograph of the printed calcium chip, a yellow resin block on a glass slide on a wooden bench. Its long serpentine runs across the top; below it are the connector's two blocks and its pedestal of bores, and a smaller serpentine.

ChipUrinalysis assays

Calcium Urinalysis Chip

Multi-reagent passive resistance-metered chip for urinary calcium quantification using the Arsenazo III method.

H.R.3.3 design, a test print

State of Utah Center of Excellence for Biomedical Microfluidics, University of UtahSCAD · LEF

20 µL chamber chip, 350 µm deep. A computer drawing from its design files, not a photograph: its body drawn see-through, its channels in orange.

The chip is 29.98 mm × 7.78 mm × 2.15 mm.

ChipChambers

20 µL chamber chip, 350 µm deep

A single monolithic resin-SLA block with one 20 µL, 350 µm-deep stadium reaction chamber, two straight 0.5 mm feed channels on the same floor, and two Ø1.5 mm vertical access bores to the top surface. Footprint 29.9782 × 7.7809 × 2.15 mm.

Phrozen Sonic Mighty 12K design, checked in CAD

State of Utah Center of Excellence for Biomedical Microfluidics, University of UtahSTL · SCAD

Three-valve peristaltic pump: its first variant, pump_150px_0. A computer drawing of the cell's channels, in orange, inside its footprint of 4.79 mm × 1.6 mm (from its LEF), drawn see-through; not a photograph.

First variant: footprint 4.79 mm × 1.6 mm.

ComponentPumps

Three-valve peristaltic pump

A pump whose only moving parts are thin flexible sheets. Three round chambers sit in a row along one liquid channel, each covered by one of those sheets with an air line above it. Pushing air into a chamber presses the sheet down and pinches the channel shut; releasing it lets the channel open again. Squeezing the three in sequence walks liquid along the channel one pocket at a time.

State of Utah Center of Excellence for Biomedical Microfluidics, University of UtahSTL · SCAD · LEF

Design a chip in your browser

Makers, each building one kind of part right in your browser: a straight channel, a chamber chip and a droplet generator. Each one gives you a file you can 3D print, with its OpenSCAD source and a record of every setting, and none of them sends anything anywhere.

The makers side by side, each with an example →

Computer render of a design, not a print: four separate paths side by side in a see-through block. On each, a short green channel leads from a raised round socket on the top face into a long six-sided blue chamber, which tapers at both ends to the channel's width, and a second channel leads on to another raised socket: eight sockets, in two rows of four. — What the Chamber Chip Maker makes, set up as its example.

Printers and process

What our chips are printed on, and what with: the printers, the resin, the print settings and the post-processing, with each published figure cited.

The library's chips and components are designed for BYU's H.R.3.3 or the Phrozen Sonic Mighty 12K; the Nordin lab's devices give the pixel and layer size they are drawn for. The pumps, the pump-and-mixer chip and the urinalysis chips printed so far are recorded on Hardware and process.

Read about printers and process →

Custom chips

The design software is open source and runs on your own computer.

About custom chips

Cite OpenMFDA

Scientific Reports (2025)

Goenner, B., Temple, S., Zapata, S., Wakeham, D., Snelgrove, A., Gaillardon, P.-E., Nordin, G. P., & Gale, B. K. (2025). An open source platform to automate the design, verification, and manufacture of 3D printed microfluidic devices. Scientific Reports, 15, 33077. https://doi.org/10.1038/s41598-025-15976-9

DATE (2025)

Snelgrove, A., Wakeham, D., Stockham, S., Temple, S. R., & Gaillardon, P.-E. (2025). OpenMFDA: Microfluidic Design Automation in Three Dimensions. Design, Automation & Test in Europe Conference (DATE 2025).