Contact

Found a formula that gives a wrong result? Want a calculator the site doesn't have yet (decrease spacing, hat crown increases, blanket sizing)? Or just want to say a tool saved your project?

Email jerry201382@gmail.com — include the numbers you entered and the result you expected if you're reporting a bug, so it can be reproduced and checked against the formula.

Feedback about what to build next matters most: the roadmap is short, and requests from real projects jump the queue.