Privacy Policy & Disclaimer

KEZURIBA (https://kezuriba.net) respects your privacy and handles personal information, cookies, and technical content in accordance with the policy below.

1. Personal information

When you contact us through our inquiry form, we may ask for your name (or handle) and email address. This information is used solely to reply to your inquiry or verify reported corrections, and is never sold or disclosed to third parties except as required by law.

2. Advertising

This site uses third-party advertising services (Google AdSense) and affiliate programs (Amazon Associates, Rakuten Affiliate).

• Third-party ad vendors, including Google, use cookies to serve ads based on a user’s prior visits to this site or other websites.
• Google’s use of advertising cookies enables it and its partners to serve ads to users based on their visit to this site and/or other sites on the Internet.
• Users may opt out of personalized advertising by visiting Google Ads Settings (or www.aboutads.info).
• As an Amazon Associate, KEZURIBA earns from qualifying purchases. If you purchase a product through a link in a section marked “PR”, we may receive a referral fee at no additional cost to you.

3. Analytics

This site uses Google Analytics (GA4), a web analytics service provided by Google, to understand how visitors use our calculators and reference pages so we can improve them. Google Analytics uses cookies to collect anonymous traffic data without identifying individual users. You can prevent data collection by disabling cookies in your browser settings or by using the Google Analytics Opt-out Browser Add-on. See How Google uses information from sites or apps that use our services for details.

4. Paid digital products (BOOTH)

Printable PDF reference sheets introduced on this site are sold on the external marketplace BOOTH (operated by pixiv Inc.). Payment processing and order personal data are handled by BOOTH under its own privacy policy and are not stored by this site. Our own PDF announcements are labeled “Printable PDF” to distinguish them from third-party advertisements (“PR”).

5. Disclaimer

• All calculation results, tables, and technical descriptions on this site are provided as reference values. While we cite primary sources from standards bodies and manufacturers and take every care to ensure accuracy, we make no warranty as to completeness, fitness for a particular purpose, or absence of error.
• Standards (ISO, JIS, ASTM, AMS, EN, DIN, etc.) and manufacturer catalogs are revised from time to time. Before machining, inspecting, or finalizing engineering drawings, always check the latest official standards, tool maker catalogs, and machine tool manuals.
• Optimal cutting conditions depend on machine rigidity, spindle power, tool overhang, workholding, coolant supply, and workpiece lot variations. Adjust parameters carefully on your actual setup.
• The operator of KEZURIBA shall not be liable for any direct or indirect damages, tool breakage, machine damage, or defective parts arising from the use of information or calculators on this site.
• External websites linked from this site (including manufacturer catalogs and online stores) are operated under their own responsibility.

6. Copyright and links

The text, original SVG diagrams, calculator code, and structured data tables on this site are copyright © KEZURIBA. Short quotations with a clear link to the source page are welcome; wholesale reproduction or redistribution of our data tables, diagrams, or code is prohibited. You may link freely to any page on this site without prior notice.

Established: October 2026