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Rat Rig is a Portuguese company near Faro that designs and sells do-it-yourself kits for large CoreXY 3D printers and CNC machines, mostly to buyers abroad. Its V-Core printers come as kits you assemble, run on RatOS, Rat Rig's Klipper distribution, and suit makers who want a big machine they can upgrade and repair themselves.

Grunnlagt: 2014 · Hovedkontor: Near Faro, Portugal · Eierskap: Privately held; founder and CEO Miguel Carvalho (2024) · Personer: About 30 employees (2024) · Nettsted: ratrig.com

Published designs, a GPL Klipper distribution, standard parts and no cloud leave the owner in control. The one limit is that the design files may not be reused commercially.

Fastvare og tilpasset fastvare
●●●●●		 RatOS, Rat Rig's Klipper distribution, is developed in the open on GitHub under the GPL-3.0 and was still being updated in 2026 (2.1 release line); plain Klipper and Mainsail can be used instead. [8][7]
Lokal styring og integrasjoner
●●●●●		 RatOS runs Klipper, Moonraker, Mainsail and KlipperScreen on a Raspberry Pi in the printer, on your own network, and Moonraker's API is documented. Rat Rig has no printer cloud or account. [7][17]
Filament, slicere og deler fra tredjeparter
●●●●●		 The machines use standard parts (MGN and HG rails, Gates belts, LDO and BigTreeTech electronics, Orbiter extruders) that Rat Rig and others sell, any filament, and any slicer; OrcaSlicer ships V-Core 3, V-Core 4 and V-Minion profiles. [4][16]
Reparasjoner og reservedeler
●●●●●		 Rat Rig sells parts one by one and publishes CAD, STL files, bills of materials and step-by-step build guides on its wiki. The design files are licensed CC BY-NC-SA 4.0, so they are free to use and modify but not for commercial reuse. [6][10][2]
Data og personvern
●●●●●		 Printing needs no account and everything runs on the printer's Raspberry Pi; RatOS's setup script even turns off the telemetry of the web framework its configurator uses. Rat Rig's privacy policy covers only its web shop. [9][5]
Fellesskap og dokumentasjon
●●●●●		 Rat Rig says its user communities (Facebook groups, plus an unofficial Discord) have many thousands of active members; documentation is public on its wiki and the RatOS site, and RatOS is developed openly on GitHub (by Mikkel Schmidt, per the RatOS docs). The documentation is split across the two sites. [1][7][6]
Fordeler
  • Large build volumes, up to 500 mm, at kit prices.
  • Open, documented designs and standard parts make repairs and upgrades straightforward.
  • RatOS gives a ready-made Klipper setup that runs entirely on your own network.
  • Upgrade kits (Hybrid, IDEX, 4.1) keep older machines current.
Ulemper
  • Sold as kits: you assemble, wire and tune the printer yourself.
  • Design files are licensed for non-commercial use only (CC BY-NC-SA), unlike GPL projects.
  • Documentation is split between the Rat Rig wiki and the RatOS site.
Merittliste
  • 2026: Rat Rig began selling the V-Core 4.1, a revised kit with a steel X gantry and newly written build documentation, together with a 4.1 upgrade kit for V-Core 4 owners. [2][3]
  • november 2024: 3D Printing Industry shortlisted the V-Core 4 (IDEX and Hybrid), released earlier in 2024, for Desktop FFF 3D Printer of the Year. [14][15]
  • september 2024: Dinheiro Vivo reported that Rat Rig had received about 200,000 euros of regional development aid for its first expansion and had been granted about 100,000 euros more from the Algarve 2030 programme for trade fairs and equipment. [12]
  • 30. august 2024: Rat Rig released the IDEX upgrade that adds a second toolhead to the V-Core 4; it told Dinheiro Vivo it sold hundreds in the first 24 hours. [12]
  • desember 2022: Rat Rig won the 3D Printing Industry Award for Company of the Year (Personal). [13]
  • 2021: Rat Rig released the V-Core 3, a high-speed CoreXY kit in 200 to 500 mm sizes, with its design files on GitHub. [11][15]
Undersøkt fra 17 kilder, sist sjekket 18. oktober 2026. Vis kilder
  1. About Us - Rat Rig ratrig.com
  2. Rat Rig V-Core 4.1 ratrig.com
  3. Rat Rig V-Core 4.1 Upgrade Kit ratrig.com
  4. All products - Rat Rig ratrig.com
  5. Privacy policy - Rat Rig ratrig.com
  6. Rat Rig Wiki wiki.ratrig.com
  7. What is RatOS? - RatOS os.ratrig.com
  8. Rat-OS/RatOS - GitHub github.com
  9. RatOS configurator setup script - GitHub github.com
  10. Rat-Rig/RatRig-PrintedParts - GitHub github.com
  11. Rat-Rig/V-core-3 - GitHub github.com
  12. Rat Rig: de fornecedores de "calhas" a lideres em impressoras 3D - Dinheiro Vivo dinheirovivo.dn.pt
  13. 3D Printing Industry Awards 2022: Who won? - 3D Printing Industry 3dprintingindustry.com
  14. 3D Printing Industry Awards 2024 - Vote Now - 3D Printing Industry 3dprintingindustry.com
  15. Rat Rig - Wikipedia en.wikipedia.org
  16. OrcaSlicer Rat Rig printer profiles - GitHub github.com
  17. moonraker.readthedocs.io