About
Evidence-backed atlas for DIY biofabrication.
The public site is generated from curated paper records, publication metadata, and linked open-source resources.
Current build
- 60 builds, published 2010–2026
- 9 application areas
- 60 of 60 DOIs verified against Crossref or DataCite
- 57 open access, 3 closed
- 0 retractions among the 60 we could check
- 60 records with implementation scoring
Other views of the same records
- Tools — named open-source systems
- Skills — barrier levels and technical tags
- Assets — CAD, BOM, protocols, firmware
- Collections — curated viewpoint lenses
Machine-readable use
- API documentation — every record as JSON
- Ontology schema
- Knowledge graph with explicit relation types
What is in the corpus, and what is not
A curator read 116 papers and kept 60. A paper is kept when it is the primary description of a piece of open-source hardware for biofabrication or the laboratory automation around it — a bioprinter, a liquid handler, a bioreactor, a microfluidic fabrication method — presented as a build someone else could attempt, in one of the 9 application areas. The 56 set aside are open hardware too, but not this kind:
- 17 Pumps and fluid components
- 11 Microscopy and imaging
- 9 Prosthetics and bionics
- 8 Adjacent hardware, not a biofabrication build
- 7 Laboratory automation outside biofabrication
- 2 Preprint superseded by a published version
- 1 Review or perspective
- 1 Software only
The 56 papers read and not included
The grouping reads the curators' technology label and the title; it is a guide to what was set aside, not a second review. Know a paper that fits the rule? Propose it.
Criteria used to score source evidence
The rubric is generated from lists/curated/criteria_rubric.csv. Each criterion has separate anchors for bioprinting, liquid handling, and microfabrication papers; score 1 indicates the least accessible or least capable case, and score 5 indicates the strongest case for the stated criterion.
What each criterion turned out to be worth
Measured across the 60 records rather than assumed from the rubric. A criterion scored for fewer than half the corpus cannot rank it, and one that gives more than 70% of records the same value is a label rather than a measurement. Two fail on those grounds and are not shown on record pages; both remain in the published CSVs.
| Criterion | Scored | Range used | Most common value | Shown on records |
|---|---|---|---|---|
| Resolution | 56 / 60 | 1–5 | 43% | Yes |
| Scalability/Throughput | 60 / 60 | 2–5 | 40% | Yes |
| Build and Part Sourcing Complexity | 60 / 60 | 2–4 | 55% | Yes |
| Skill Complexity | 60 / 60 | 2–4 | 68% | Yes |
| Equipment/consumable/facility accessibility | 60 / 60 | 2–4 | 43% | Yes |
| Application Level | 60 / 60 | 2–5 | 75% | No — 75% of records share one value |
| Accessibility to documentation | 60 / 60 | 2–5 | 47% | Yes |
| Validation/Troubleshooting Complexity | 60 / 60 | 2–4 | 67% | Yes |
| Speed/Cycle Time | 53 / 60 | 1–4 | 51% | Yes |
| Build Time | 6 / 60 | 3–5 | 67% | No — scored for only 6 of 60 records |
Eight of the ten never award a 1 or a 5, so the nominal 1–5 scale is in practice a 2–4 scale. Record pages show each score against the range the corpus actually uses, so a 3 is not read as a failing mark when it is the median.
Show the full scoring matrix — every criterion's anchors, per technology
Bioprinting
10 criteriaScore anchors for all implementation criteria under the Bioprinting technique.
| Criterion | Evidence to extract | 1 | 2 | 3 | 4 | 5 |
|---|---|---|---|---|---|---|
| ResolutionHow small or precise can this technology achieve? | Feature size | >1000 µm | 500-1000 µm | 100-500 µm | 10-100 µm | <10 µm |
| ScalabilityThroughputHow scalable is the method from low device production to high-throughput biofabrication? | Print speed, build volume, number of printheads, level of human involvement, parallelization, bioink capacity, and reproducibility | Single-construct printing with slow operation; extensive manual intervention; limited reproducibility | Small-batch production with manual loading or setup and limited automation | Moderate throughput with repeatable fabrication of multiple constructs and some automation or parallelization | High throughput with multiple constructs per run; automated workflows; reduced user intervention | Scalable platform with continuous operation, multi-printhead capability, and automated sample handling |
| Build and Part Sourcing ComplexityHow many components are off-the-shelf versus custom-made, and how complex is it to source and build them? | Ability to convert an existing 3D printer; use of off-the-shelf firmware, control boards, extruders, dispensers, or other components; amount of custom fabrication required | Requires design and development of a novel printing system, including custom mechanical design, electronics, control software, and specialized fabrication tools | Requires custom hardware integration involving structural fabrication, electronic modifications, and/or firmware or software adjustments | Requires multiple custom or modified components, such as 3D-printed mounts, custom brackets, or modified electronics; basic mechanical assembly and wiring required | Requires only commercially available components, such as a syringe pump or extrusion nozzle printhead, on a repurposed 3D printer; no custom fabrication or electronic modification | Commercial printer or open-source kit with no hardware modifications; requires only basic setup and software installation |
| Skill ComplexityHow broad or specialized are the skills needed to build and use the technology? | Cell culture, 3D modeling, microscopy or imaging, CAD, materials science, and bioink formulation | Designing a new bioprinting platform; developing novel hardware or control strategies; engineering new bioink systems | Requires advanced skills, including electronics, software, custom printing workflows, bioink design, and biological validation of printed constructs | Requires skills in multiple technical areas, including mechanical assembly, calibration, bioink preparation, and optimization of printing parameters | Requires basic mechanical and laboratory skills, such as printer operation, material preparation, and routine parameter adjustment | Requires basic laboratory skills only; established protocols with minimal technical troubleshooting |
| EquipmentConsumableFacility Requirement AccessibilityHow accessible are the equipment, consumables, technology, and facilities required to build and use this tool? | 3D printer access, consumables such as bioinks, and sterile enclosure requirements | Requires highly specialized infrastructure or commercial-grade equipment | Requires advanced equipment or dedicated fabrication facilities | Requires specialized laboratory equipment or consumables that are available in many research laboratories | Requires commercially available equipment and consumables with basic laboratory access; fabrication can be performed using common tools or desktop equipment | Requires only readily available components and standard laboratory supplies |
| Application LevelIs the technology general-purpose for many applications in the space, or was it designed for a narrow use case? | Range of tissue types, extracellular matrix substitutes or hydrogels, cell types, and application flexibility | Demonstrated only for non-biological or proof-of-concept printing; no biological application shown | Demonstrated printing of simple biological materials such as hydrogels or acellular constructs | Demonstrated printing of cell-laden constructs with limited functional validation | Demonstrated capability for complex biological applications, such as multi-material printing or heterogeneous tissue constructs | Demonstrated capability for printing clinically relevant architectures with functional validation |
| Accessibility to documentationHow complete is the documentation for building and using the tool? | Repositories, CAD files, firmware and code documentation, G-code, custom bioink formulations, source material lists, and written or filmed assembly instructions | Insufficient information for reproduction | Provides partial build information but omits critical details required for reproduction | Provides enough information to build and operate, but some details such as component specifications, assembly steps, or calibration procedures require interpretation or optimization | Provides detailed building and operating information, enabling reproduction with limited additional information | Provides a complete build guide enabling direct reproduction, including all design files, bill of materials, fabrication protocols, software or firmware, operating procedures, and user support resources |
| ValidationTroubleshooting ComplexityHow well validated is the technology, and how easy is it to validate once built? | Mechanical validation, such as axis accuracy, syringe-pump function, and nozzle flow behavior; material validation, such as rheology, cross-linking, and shape; biological validation, such as cell viability assays | Requires extensive validation and benchmarking against commercial systems or established standards; failures may require redesign of hardware, software, or biological protocols | Requires advanced validation against multiple performance criteria; troubleshooting requires multidisciplinary expertise | Requires multiple validation steps involving both hardware and biological performance | Requires basic calibration and performance testing using readily available tools | Requires only verification of system performance using simple direct tests |
| SpeedCycle TimeHow fast does the method generate usable parts or the intended outcome once built, compared with traditional or alternative tools? | Time to fabricate a construct, considering printing speed, automation, and workflow efficiency | Slower than alternatives and impractical for routine use | Slower than alternatives | Moderate increase in printing time, such as hours | Slightly slower, such as minutes, but still practical for routine printing | Faster than alternatives |
| Build TimeHow quickly can the device or method be set up? This category contributes to scalability, although fast setup does not necessarily imply scalable large-batch manufacturing. | Material sourcing time, mechanical and electrical assembly, firmware or software setup, calibration, bioink optimization, and sterility modifications | Requires complex fabrication and assembly of custom components, calibration, and multiple stages of optimization or modification (multiday) | Requires fabrication and assembly of custom components and calibration; optimization is expected (multiday) | Requires assembly of components and calibration with instructions; limited optimization expected (multiday) | Requires minor assembly of an existing platform with minimal calibration (operational within 1 day) | Ready to use with minimal setup, such as pre-assembly and no calibration or optimization requirement (same-day operation) |
Liquid Handling
10 criteriaScore anchors for all implementation criteria under the Liquid Handling technique.
| Criterion | Evidence to extract | 1 | 2 | 3 | 4 | 5 |
|---|---|---|---|---|---|---|
| ResolutionHow small or precise can this technology achieve? | Minimum handling volume, maximum volume, viscosity range, and accuracy | Minimum reliable volume >100 | 50-100 | 10-50 | 1-10 | <1 |
| ScalabilityThroughputHow scalable is the method from low device production to high-throughput biofabrication? | Number of channels and resource handling capacity | One sample at a time; requires manual intervention | Automated continuous operation but limited to small batch sizes | Can process a full plate independently | Multichannel unattended operation | 8 or more channels |
| Build and Part Sourcing ComplexityHow many components are off-the-shelf versus custom-made, and how complex is it to source and build them? | Number of custom parts, difficulty of making or sourcing custom parts, regional availability of parts, and need for existing equipment modification | Large amount of custom machining; engineering and programming expertise required | Several precision custom parts; major modification of existing equipment required | Combination of off-the-shelf and custom parts | Mostly off-the-shelf parts and simple 3D-printed components | Off-the-shelf parts or kits |
| Skill ComplexityHow broad or specialized are the skills needed to build and use the technology? | Mechanical assembly, CAD, electronics, soldering, and programming | Expert-level skill required across several areas | Advanced skills in multiple areas required | Moderate maker skills and common laboratory experience required | Basic assembly and simple coding; tasks can be completed by a typical researcher | Plug-and-play system or simple assembly; no specialized skills required |
| EquipmentConsumableFacility Requirement AccessibilityHow accessible are the equipment, consumables, technology, and facilities required to build and use this tool? | Tips, syringes, proprietary consumables, enclosure requirements, and recurring costs | Requires cleanroom access, specialized manufacturing facilities, or highly proprietary consumables | Requires expensive specialized equipment or difficult-to-source consumables | Requires a university workshop or shared user facility and some specialized components | Can be produced with common desktop fabrication tools and generic consumables | Requires only standard benchtop laboratory equipment and widely available generic consumables |
| Application LevelIs the technology general-purpose for many applications in the space, or was it designed for a narrow use case? | Demonstrated liquid types, viscosity ranges, particle-containing liquids, supported operations, compatible labware, programmability, and protocol flexibility | Demonstrated one fixed liquid in a narrowly defined procedure | Supports one main application with limited changes in volume, liquid, or protocol | Supports several common liquid-handling tasks or liquid types | Supports multiple workflows, labware formats, and challenging liquids | General-purpose programmable and modular platform suitable for a variety of liquids |
| Accessibility to documentationHow complete is the documentation for building and using the tool? | Open-access article, bill of materials, CAD files, source code, firmware and wiring diagrams, assembly instructions, calibration and validation workflows, operating protocols, troubleshooting guides, and open-source license | Only conceptual description is provided; critical information is missing | Partial methods are provided, but essential files, code, or component details are absent | Enough information to attempt replication, but substantial interpretation is required | Complete build and operating instructions with only minor gaps | Complete openly accessible package with files, code, calibration examples, and troubleshooting |
| ValidationTroubleshooting ComplexityHow well validated is the technology, and how easy is it to validate once built? | Validation methods, tested volumes, tested liquids, replicates, accuracy, precision, multiday tests, multidevice tests, benchmarks against commercial liquid handlers, acceptance criteria, and troubleshooting information | No meaningful quantitative validation and no calibration procedure | Tested under one condition with limited replicates and no benchmark | Accuracy or precision tested across multiple volumes or conditions; basic calibration provided | Validated across several volumes and liquid types and compared with a conventional method | Extensive multiday, multidevice validation with clear calibration and troubleshooting guidance |
| SpeedCycle TimeHow fast does the method generate usable parts or the intended outcome once built, compared with traditional or alternative tools? | Time required for aspiration and dispensing cycles compared with similar liquid-handling methods | More than 2x slower | 20-100% slower | Within +/-20% of comparable methods | 1.2-3x faster | More than 3x faster |
| Build TimeHow quickly can the device or method be set up? This category contributes to scalability, although fast setup does not necessarily imply scalable large-batch manufacturing. | Active hands-on construction time, total construction time, software setup, calibration time, and time to first successful operation | More than one month or more than 80 active hours | One to four weeks or approximately 40-80 hours | Two to seven days or approximately 16-40 hours | Less than two days or approximately 4-16 hours | Less than four hours or essentially ready to operate |
Microfabrication
10 criteriaScore anchors for all implementation criteria under the Microfabrication technique.
| Criterion | Evidence to extract | 1 | 2 | 3 | 4 | 5 |
|---|---|---|---|---|---|---|
| ResolutionHow small or precise can this technology achieve? | Feature size | >500 µm | 100-500 µm | 50-100 µm | 10-50 µm | <10 µm |
| ScalabilityThroughputHow scalable is the method from low device production to high-throughput biofabrication? | Fabrication batch size, process repeatability, and parallel processing | Single-device fabrication; each device requires independent fabrication steps; no reusable components (1-10 devices per month) | Small-batch fabrication with manual processing and limited reuse of molds or masters (10-50 devices per month once a mold or master is made) | Batch fabrication enabled by reusable molds or masters; multiple devices produced from a single fabrication step (50-200 devices per month) | Parallelized fabrication workflow using standardized processes, allowing consistent production of many devices (500-1000 devices per month) | Automated or highly standardized manufacturing workflow with minimal manual intervention and high production capacity (1000+ devices per day) |
| Build and Part Sourcing ComplexityHow many components are off-the-shelf versus custom-made, and how complex is it to source and build them? | Availability of existing hardware equipment, such as mask aligners or mask writers, versus custom equipment requirements | Requires development of a custom fabrication workflow, including novel processing methods, custom-built equipment, specialized infrastructure, or extensive optimization of fabrication parameters | Requires specialized microfabrication infrastructure or custom fabrication processes, such as photolithography, cleanroom-access equipment, custom molds, precision alignment, or specialized materials | Requires multiple fabrication steps and dedicated laboratory equipment, such as spin coating, plasma bonding, UV exposure, or mold fabrication, but uses established protocols and commercially available materials | Requires assembly of commercially available materials or basic fabrication steps, such as cutting, drilling, molding, or simple 3D printing; no specialized microfabrication equipment required | Commercially available equipment; requires only basic tools and materials; no specialized equipment or fabrication facilities |
| Skill ComplexityHow broad or specialized are the skills needed to build and use the technology? | CAD, photolithography and patterning, etching, characterization, cleanroom protocols, and materials science | Expert-level skills required for developing new fabrication methods, designing custom equipment, optimizing novel materials or processes, and establishing new manufacturing workflows | Requires advanced microfabrication expertise, including photolithography, microscale patterning, specialized equipment operation, precision alignment, and fabrication troubleshooting | Requires microfabrication laboratory skills, including established fabrication workflows, mold preparation, surface treatment, bonding techniques, and optimization of fabrication parameters | Requires CAD design, desktop fabrication such as 3D printing or laser cutting, basic bonding or assembly, and dimensional verification | Requires basic fabrication skills, including device assembly, simple cutting or molding, following published fabrication protocols, and basic materials handling |
| EquipmentConsumableFacility Requirement AccessibilityHow accessible are the equipment, consumables, technology, and facilities required to build and use this tool? | Benchtop versus cleanroom operation; professional-grade versus maker-grade consumables; CAD software accessibility | Requires highly specialized facilities or proprietary equipment; outsourced fabrication likely | Requires cleanroom access | Requires specialized laboratory equipment and consumables, such as a spin coater, plasma cleaner, PDMS, specialized polymers, or UV curing systems | Requires desktop fabrication tools and standard laboratory equipment; materials are readily available | Requires common tools and commercially available materials; no specialized laboratory equipment or facilities required |
| Application LevelIs the technology general-purpose for many applications in the space, or was it designed for a narrow use case? | Specificity versus generality of the biological or engineering problem, including disease modeling, organ or cell applications, and drug screening models | Demonstrated only as proof of concept without a functional application | Produces a functional device for a limited or narrow purpose with basic validation of intended operation | Produces a functional biological or engineering platform validated for its intended application | Enables advanced or expanded applications, such as integrated sensing or multifunction platforms | Enables highly versatile or broadly applicable platforms, such as automated systems, high-throughput screening, multi-organ systems, or clinically relevant applications |
| Accessibility to documentationHow complete is the documentation for building and using the tool? | CAD or mask files, bill of materials for consumables and hardware, build instruction manual, process flow sheets or SOPs, calibration metrics, source code, software documentation, and troubleshooting or failure-mode documentation | Insufficient information for reproduction | Describes the fabrication approach and materials but omits critical process parameters | Provides a reproducible fabrication workflow with major materials, steps, and conditions, but some optimization details are unavailable | Provides detailed fabrication protocols, including device design, materials, process conditions, and assembly methods | Provides a complete fabrication package, including design files such as CAD or masks, detailed protocols, process parameters, and troubleshooting guidance |
| ValidationTroubleshooting ComplexityHow well validated is the technology, and how easy is it to validate once built? | Feature validation, such as imaging, metrology, or microscopy; functional and material validation, such as flow or leak testing, surface characterization, or spectroscopy; comparison with baseline fabrication methods; physical, biological, or chemical assays | Requires extensive characterization, benchmarking, and expert troubleshooting; failure sources are difficult to identify | Requires specialized testing and optimization of multiple fabrication parameters; troubleshooting requires advanced expertise | Requires functional testing and process optimization; common failure sources can be identified with experience | Requires standard validation tests with clear acceptance criteria; troubleshooting approaches are established | Requires only basic validation with clear pass/fail criteria; failures are easy to identify and correct |
| SpeedCycle TimeHow fast does the method generate usable parts or the intended outcome once built, compared with traditional or alternative tools? | Design-to-device turnaround compared with traditional fabrication methods | Slower than traditional methods and requires multiple iterations | Slower than traditional methods by hours | Approximately the same duration as traditional methods | Hours to days faster than existing methods | Days to weeks faster than existing methods |
| Build TimeHow quickly can the device or method be set up? This category contributes to scalability, although fast setup does not necessarily imply scalable large-batch manufacturing. | Material sourcing time, mechanical assembly, leak testing, calibration, biological validation, fabrication optimization, and sterility validation | More than 1 month | 1-4 weeks | 1 week | Less than 1 week | Less than 1 day |