Legal notice
Owner of the website
In accordance with Article 10 of Spanish Law 34/2002 on information society services and electronic commerce (LSSI), this website, 50machines.com ("Reboot · 50 Machines"), is operated by:
- Company
- ASSEMBLR VENTURES, S.L. (sole-shareholder limited company)
- Tax ID (NIF)
- B19733815
- Registered office
- Calle Príncipe de Vergara 13, 4th floor, door E, 28001 Madrid, Spain
- Register
- Madrid Companies Register (Registro Mercantil de Madrid), sheet M-828326, section 8, entry 1 (9 July 2024)
- Sole director
- Rolando Zubirán Robert
- direccion@quantumhive.es
- Telephone
- +34 649 50 08 51
Purpose
The site publishes an illustrated field manual of 50 historical and appropriate-technology machines, with interactive build guides, and sells the printed edition.
Terms of use
Access is free. By using the site you agree to use it lawfully and not to damage, overload or copy it by automated means.
Intellectual property
Texts, isometric illustrations, 3D-style models, guides, design and code are owned by ASSEMBLR VENTURES, S.L. or used under licence. You may read, share links to and print pages for personal use. Any commercial reproduction, distribution or transformation requires prior written permission. Exception: the guide format, templates, reference guides and community contributions published in the open repository github.com/rolandozubiran-office/50machines-open are licensed under Creative Commons Attribution-ShareAlike 4.0 (content) and MIT (code), as stated there. The printed book and the 50 Machines name are not covered by those licences.
Content and liability
The guides are educational and historical. They are not engineering drawings, certified instructions or professional advice. Please read the safety notice. We are not responsible for the content of external sites we link to.
Law
This notice is governed by Spanish law. Consumers keep the right to go to the courts of their place of residence.
Last updated: 13/10/2026