Last updated: 25 September 2026.
Who is responsible
The publisher and controller for the processing described here is Víctor Valiente Parra, Carrer Fluvia 33, Vallgorguina, Spain. Contact: 3dpersvvp@gmail.com. Further publisher details appear in the legal notice.
Calculator inputs
Calculations and colour layouts run in your browser. The application does not send the values you enter to the publisher, create a user account or save them in cookies, local storage or a remote database. Reloading or closing the page resets the working values. Printing or saving a PDF is handled by your browser and device.
Hosting and connection data
Cloudflare hosts and delivers the site. Ordinary requests can involve connection information such as IP address, requested address, date, browser details and security signals, processed to deliver and protect the service. Hosting is provided through Cloudflare’s infrastructure, which may process data internationally. See Cloudflare’s privacy policy for its processing and safeguards.
The publisher’s purpose for necessary delivery and security processing is to operate and protect the website, based on legitimate interests where applicable. We do not enable a visitor analytics service or build advertising profiles in the current version. Provider-managed security data is subject to the provider’s applicable retention and safeguards.
Cookies and similar storage
The current application does not set advertising, analytics or preference cookies and does not use browser storage for calculator values. Cloudflare may use necessary security mechanisms where a security feature requires them. A consent banner is not used to imply that advertising is active when it is not.
Email you choose to send
If you email the publisher, your email address, name if supplied and message content are used to respond, address corrections and manage the correspondence. The basis is the legitimate interest in handling an enquiry you initiate; where an enquiry concerns a contractual request, applicable pre-contractual or contractual necessity may apply. Email is handled through Google’s email service.
Correspondence is normally retained for no longer than 12 months after the last relevant interaction, unless a legal obligation or an unresolved claim requires longer retention. Avoid including sensitive information that is unnecessary to your question. We do not add correspondents to marketing lists.
Advertising
The site is being prepared for possible Google AdSense advertising. The current version includes publisher-verification information and an ads.txt file, which identify the intended authorised advertising seller. These do not themselves load advertisements or advertising cookies. No AdSense advertising script is active in this version.
Before introducing advertising that requires consent, this notice and the relevant consent controls will be updated. Where Google requires a certified consent management platform, one must be configured before serving the affected ads. Information on Google’s partner-site processing is available at Google’s partner-site privacy information.
Your rights
Where applicable under data-protection law, you can request access, rectification, erasure, restriction, portability or object to processing. If processing is based on consent, you can withdraw it without affecting prior lawful processing. Contact the publisher using the address above. You may also complain to the Spanish Data Protection Agency (AEPD) or your competent supervisory authority.
We do not sell personal information or use the site to make automated decisions with legal or similarly significant effects. Third-party links lead to services with their own privacy practices.