Build volume
12.6 x 5.2 x 6.1 in (approximately 320 x 132 x 155 mm)
Advertised dimensions; check usable space and variants.
Sources & dates
- Markforged Onyx One desktop composite 3D printer listing · 2026-08 · vendor
Desktop composite printer restricted to Markforged's chopped-carbon-fibre Onyx filament, with no continuous fibre.

12.6 x 5.2 x 6.1 in (approximately 320 x 132 x 155 mm)
Advertised dimensions; check usable space and variants.
Enclosed desktop cabinet
Published enclosure and chamber-heating notes.
Not recorded in this catalog.
Dated listing, not a live offer. Read the configuration and region.
Understand the hardware, explore compatible changes and find a diagnostic starting point when something goes wrong. Expand the specification sections for every recorded value, condition and original reference.
Dimensions, construction and the hardware that moves the print.
| Property and unit | Published value and conditions | Sources and dates |
|---|---|---|
| Manufacturer & exact marketed model name (verify the exact product identity first) | Markforged Onyx One Desktop 3D Printer | 1 source
|
| Variants & sibling models — and how to tell them apart (spec-contamination risk) | The defining limitation: the Onyx One prints Onyx only and has NO continuous-fibre reinforcement. The Onyx Pro adds fibreglass, the Mark Two adds the full continuous-fibre range, and the X7 is a much larger industrial machine. Onyx One specifications must never be read from Mark Two or X-series material lists | 3 sources
|
| Property and unit | Published value and conditions | Sources and dates |
|---|---|---|
| Build volume X×Y×Z (mm) — advertised vs actually usable | 12.6 x 5.2 x 6.1 in (approximately 320 x 132 x 155 mm) | 1 source
|
| Enclosure: open / enclosed; panel material; door/lid | Enclosed desktop cabinet | 1 source
|
Extrusion, heating, leveling and material handling.
Use the guided extrusion checks, beginning with drybox spool routing, tangles, desiccant placement and bent feed tubing before moving to component checks.
Applies to: Onyx One Gen 2; this manual does not establish Gen 1 part compatibility.
| Property and unit | Published value and conditions | Sources and dates |
|---|---|---|
| Type (direct drive / bowden) & design name | Single extruder — plastic only, no fibre channel | 1 source
|
| Property and unit | Published value and conditions | Sources and dates |
|---|---|---|
| Officially supported filament list | Onyx only — Markforged's nylon filled with chopped carbon fibre. Markforged claims parts 1.4x stronger than ABS and heat deflection to 293 °F (145 °C) | 1 source
|
Firmware, controls, connections and calibration.
The manufacturer’s Update Manager provides cloud updates and a documented Eiger USB-update route.
Applies to: Onyx One Gen 2; this manual does not establish Gen 1 part compatibility.
| Property and unit | Published value and conditions | Sources and dates |
|---|---|---|
| Firmware base & current version (Klipper fork / Marlin fork / proprietary) | Proprietary; slicing and print management run in Markforged's cloud-based Eiger software | 1 source
|
This guide presents the catalog’s sourced record for this exact model. Source dates belong to each reference; a page update does not mean every specification has been rechecked.
Prices are dated listing snapshots, with configuration, regional and sale conditions. They are not current offers. Unknown values remain unfilled.
Firmware, variants and available accessories can change. Read the original reference before making a purchase or planning a process.
Firmware, modifications and troubleshooting links are checked against the model and stated hardware or firmware revision. A creator’s compatibility claim is not a fit test by this site. Official troubleshooting describes a diagnostic route; individual reports do not establish a failure rate.
This review did not verify printable modifications, hardware upgrades for this exact model. That is a research gap, not a claim that none exist.