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YOU CAN BUILD THE SLICER THAT CUTS LIVING TISSUE, FOR 853 DOLLARS INSTEAD OF 15,000 DOLLARS

An 853-dollar 3D-printed, hand-cranked tissue slicer that cuts living organoids inside a biosafety cabinet, built as an alternative to vibratomes costing 5,000-15,000 dollars.

by Martinez-Martin et al., UMass Amherst

FULL CAD BOM FIRMWARE DOCS

ScienceOpen-hardware

Built with3D printing

difficulty
●●●●●
time
a long weekend
license
CC-BY-NC-4.0
repo
repo FINISHED0 stars

WHAT YOU’LL NEED

1
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COMPAREE VERDICT

This is a serious piece of lab hardware for people already doing tissue culture who need to section living samples and cannot justify a commercial vibratome. The paper checked slice thickness on agarose blocks at 250 to 500 microns and showed that human stem-cell-derived brain organoids sliced on it proliferated more (Ki-67 staining) than unsliced controls. The hand-cranked razor arm is SLS-printed nylon so it survives autoclaving, the sample box is acrylic, and slice position is set on a commercial Thorlabs translation stage; the whole thing fits inside a biosafety cabinet. The BOM is 853.21 dollars against basic commercial vibratomes at 5,000 to 15,000 dollars, and most of that is the translation stage. Unlike a vibratome, the blade does not vibrate, and the authors warn that soft tissue may be cut less cleanly than their agarose-embedded organoids. The biggest barrier is not the print or the build — it is that you need a working tissue culture lab, sterile technique, and the organoids or explants to slice in the first place. This is not a garage project. The second barrier is the licence: CC-BY-NC means you cannot sell devices or offer slicing as a service. If you are already culturing tissue and need affordable sectioning, this is real. If you are trying to decide whether to start tissue work, a slicer is not the first piece of kit you need.

GOOD TO KNOW

  • —SolidWorks CAD files are on Mendeley Data under CC-BY-NC 4.0 (non-commercial); the bill of materials is in the paper.
  • —The paper gives assembly instructions with photos, slicing protocols, and validation data from human brain organoids.
  • —No firmware or electronics — this is a fully manual device: a hand crank drives the razor arm and a micrometer translation stage sets slice thickness.
  • —No GitHub repository; all files are dataset attachments.
  • —You need access to a biosafety cabinet and autoclave to use this as intended.
  • —The non-commercial licence means you cannot sell slicing services or devices without negotiating separate terms.

Parts to buy

6 items

From our check of the build. Exact quantities and part numbers are in the creator’s BOM.

  • Thorlabs two-axis translation stage with rotating platformFind
  • SLS-printed nylon arm partsFind
  • ¼-inch acrylic sheet for the sample boxFind
  • 8×22×7 mm bearingsFind
  • Metric bolts and nutsFind
  • Razor bladesFind

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Can I build this?

PrintThe arm parts (wheel, lever, crank, razor holder and base mounts) in SLS nylon — the paper names both Nylon-12 and PA11; the base is a Thorlabs stage and the sample box is cut from acrylic
BuyThorlabs two-axis translation stage with rotating platform, SLS-printed nylon arm parts, ¼-inch acrylic sheet for the sample box, 8×22×7 mm bearings, metric bolts and nuts, razor blades — full BOM in the paper
ToolsSLS printer access (or service bureau), basic hand tools, autoclave, biosafety cabinet
SkillsTissue culture experience required; this assumes you already know sterile technique and organotypic culture
TimePrint is overnight at a bureau, assembly is a few hours, but getting it sterile and validating slice thickness will take the rest of the weekend
Cost853.21 dollars as published, of which 730 dollars is the Thorlabs translation stage and about 124 dollars the SLS nylon printing
SafetyTissue work hazards (human cells, biowaste disposal, sterile technique) and autoclave operation. The device itself has a sharp blade. If you do not already have biosafety training, this project is premature.

Build at your own risk. Projects involve tools, electronics and sometimes mains voltage — follow the creator’s safety notes.

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Gallery

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Start here

Navigation into the creator’s own docs — we don’t rewrite the guide, we route you to the source.

  1. 1.Read the HardwareX paper in full to understand sterility requirements and slicing protocols (Open-access, includes assembly photos and validation data)
  2. 2.Download the SolidWorks CAD files from Mendeley Data (linked in the paper) and export the printed parts; the BOM is in the paper(CC-BY-NC 4.0 — non-commercial use only)
  3. 3.Source SLS Nylon-12 printing (in-house or bureau) — the material choice is non-negotiable for autoclave compatibility(FDM Nylon may warp under steam; the paper used SLS)
  4. 4.Order components from the BOM, paying attention to the Thorlabs two-axis translation stage (most of the cost) and the razor blade(Total published cost is 853.21 dollars)

KNOWN ISSUES

  • The licence is CC-BY-NC, so offering slicing services or selling devices is prohibited without separate permission from UMass Amherst.
  • This project assumes you already have a tissue culture lab, trained sterile technique, and samples to slice. If you are setting up tissue culture from scratch, you need an incubator, hood, and protocols before a slicer matters.
  • Nylon-12 SLS printing is not a desktop job. You will use a service bureau or an industrial machine. FDM Nylon may not survive repeated autoclaving.
  • The blade does not vibrate, unlike a commercial vibratome. The authors warn that soft tissue such as real brain tissue may be cut less precisely and damaged more than the agarose-embedded organoids they tested, and every sample has to be embedded in agarose.
  • The paper validates on brain organoids; if you are slicing different tissue (e.g. liver, muscle), slice quality and protocol will differ.
  • No firmware or motor — every cut is made by turning a hand crank, so throughput depends on you; the authors report about one minute per slice.

Can I use this outside a research lab?

Not practically. You need a biosafety cabinet, an autoclave, and a sterile culture setup. The device is built for organotypic culture, which means you already have living tissue to section.

What if I print it in a different material?

The paper chose Nylon-12 specifically because it survives autoclaving without warping. Other materials may not, which defeats the sterility design.

Can I sell devices or offer slicing as a service?

No. The CC-BY-NC 4.0 licence prohibits commercial use. You would need to negotiate separate terms with UMass Amherst.

How does slice quality compare to a commercial vibratome?

The paper tested thickness accuracy on agarose gel blocks at 250, 350 and 500 microns (a 250 micron target measured about 256 microns), and showed that sliced brain organoids had more proliferating cells than unsliced ones. The authors claim resolution comparable to commercial devices, but note that without a vibrating blade, softer tissue may be cut less cleanly than with a vibratome.

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Discussion1

FROM THE COMPAREE TEAM

The paper reports about one minute per slice, thicknesses from 250 microns to 1 mm, and sliced brain organoids proliferating better than unsliced ones. What tissue would you try first, and how long would you budget for getting the blade alignment right?

CompareeTEAM27d agoedited

Practical notes from our verification: the SolidWorks CAD files live on Mendeley Data as a dataset (doi 10.17632/p3npz8wkny.2) rather than a code repository, the paper is open access with the BOM inside, and two supplementary videos are attached to the HardwareX article. The slicer is fully manual: a crank-driven razor on printed nylon arm parts, with a Thorlabs two-axis translation stage as the base — there is no motor. The single biggest gate is not the build or the print — this only makes sense if you already have a tissue culture lab and samples to slice. The design files are CC-BY-NC 4.0, so commercial use is off the table without permission, which matters if you were thinking of offering slicing services. The published cost of about 853 dollars is dominated by the translation stage, at roughly 730 dollars. Correction (4 October 2026): we re-checked this page line by line against the project's own repository, documentation and videos, and fixed errors in earlier versions.

Martinez-Martin et al., UMass Amherst

Built to make organotypic tissue culture accessible outside labs with 15,000 dollars instrument budgets. The team validated it on human pluripotent stem cell brain organoids, showing that sliced samples proliferated better than unsliced controls.

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