Privacy Policy

General information about ordinary site data and external destinations.

The site may receive ordinary request information used for delivery, security and troubleshooting. Calculators run as planning tools and should not receive confidential information. Amazon and other external destinations operate under their own privacy policies and account systems.

Scope and responsibility

Content is maintained for research and comparison. Product listings, manuals and material formulations can change, so readers should verify the current source before acting. Safety-critical questions belong with the manufacturer or a qualified professional familiar with the exact equipment and process.