The swatch
Free FiberTools newsletter
Swatch Signal
One practical fiber-math note most weeks. Each issue starts with a real project decision, shows the calculation, and links to the free tool that helps you check it yourself.
Join free and get the Survival Kit now
The seven-page fillable and printable kit includes sourced yarn weights, tool conversions, swatch-to-finish math, yarn planning, and a project-rescue record.
Free. One practical note most weeks. No affiliate links in the email. Unsubscribe anytime. Privacy details
Built to save a project, not fill an inbox
Every issue follows the same useful four-part rhythm.
The math
One worked decision
A transparent formula for size, gauge, yarn, repeats, or shaping - with assumptions visible.
The rescue
One mistake to prevent
A short checkpoint to run before buying yarn, restarting, cutting, seaming, or finishing.
The vote
One choice for readers
A fixed, privacy-safe vote on the next calculator, experiment, printable, or product problem.
The inbox promise
- No affiliate links inside the email; product guidance stays on clearly disclosed website pages.
- No copied patterns, private project text, or calculator results in analytics.
- No daily content treadmill. We send when there is a calculation or experiment worth keeping.
- Every issue includes an unsubscribe link, and the free calculators remain available without an account.
Want to see the methodology first? Read the FiberTools Formula Library.