Privacy policy

Last updated: 25 August 2026.

Who is responsible

The controller of this website is Álvaro Melgar Merenciano, whose identifying details appear in the legal notice. You can get in touch at melgarmerencianoalvaro@gmail.com.

What data we process

None that leaves your device. Every Filacoste calculator runs entirely in your browser: the weights, times, prices and files you enter are not sent to any server, not stored in any database and not shared with anyone. If you drop a G-code file, it is read locally on your own machine.

There is no user registration, we don't ask for an email address and we use no contact forms that send data: the only way to reach us is an email you choose to write.

What is kept in your browser

To make the tool convenient, Filacoste may store information in your browser's local storage. These are not tracking cookies and nothing travels anywhere:

• Your working settings (printer, electricity tariff, hourly rate and markup), only if you press «Save my settings».
• Your last five calculations, only if you save them yourself.
• Whether you have already seen an advertising notice during this session, so it isn't repeated.

You can wipe all of it at any time by clearing the site data in your browser settings. The detail is in the cookie policy.

Advertising

This site is funded by advertising. Ads are served by Google AdSense, operated by Google Ireland Limited (Gordon House, Barrow Street, Dublin 4, Ireland). To serve and measure them, Google and its partners may store and read cookies and identifiers on your device, and process data such as your IP address, the browser and device you use and the pages you visit on this site.

The site is currently awaiting Google's review and no ads are being shown yet. Once they start showing, if you are in the European Economic Area, Switzerland or the United Kingdom you will first see a consent notice handled by Google's certified system, where you will be able to accept or reject non-essential uses. Whatever you reject, the calculators will keep working exactly the same.

For that advertising Google decides on its own account and answers for it. You can read how Google uses information from sites that use its services and adjust personalisation in Google's ad settings.

Analytics

We use no analytics or tracking tools of our own: we do not know how many people visit or what they calculate. The only third-party script the site loads is Google AdSense, described in the section above.

If you send us an email

The calculators generate no personal data at all, but if you choose to write to us we do process what you send: your email address and the content of your message.

• What for: only to read it and reply to you.
• Legal basis: your own consent in writing to us, and our legitimate interest in answering questions about the site (Articles 6(1)(a) and 6(1)(f) GDPR).
• How long: as long as it takes to resolve your query, and at most one year from your last message. After that it is deleted.
• Who we share it with: nobody. The email is handled by our email provider and is never sold or passed on to third parties.

Your rights

The calculators build no profile of you: there is nothing to access or erase from using them. If you have written to us, you can exercise these rights over that email under Regulation (EU) 2016/679:

• Access: know what we hold about you.
• Rectification: correct it if it is wrong.
• Erasure: have it deleted.
• Restriction and objection: have us stop using it.
• Portability: receive it as a file.

To exercise them, write to melgarmerencianoalvaro@gmail.com. And if you feel we have not handled it properly, you have the right to complain to the Spanish Data Protection Agency (www.aepd.es), the supervisory authority in Spain, or to the authority in your own country.

Changes

If this policy changes, the date at the top will be updated.