# Sources and implementation decisions

Checked 2026-08-26. Public pages were used to verify definitions and formulas; no competitor code, copy, or design was copied.

## Repeat Length Calculator / Gear Repeat Calculator

- Publisher: Flexoworks
- URL: https://www.flexoworks.com/tools/repeat-length-calculator
- Used for: teeth, circular pitch, repeat formula, units, limitations.
- Formula: `Repeat = Teeth × Pitch`; print-surface diameter is `Repeat / π`.
- Cross-check: Acme Graphics, https://www.acme.graphics/calculators
- Decision: READY. A 1/8 inch pitch is a reference only; users can enter the actual pitch.

## Plate Cost Calculator

- Publisher: Flexoworks
- URL: https://www.flexoworks.com/tools/plate-area-calculator
- Used for: width, height, quantity, area rate, minimum billed area, area/cost formulas.
- Cross-check: Acme Graphics, https://www.acme.graphics/calculators
- Decision: READY. The calculator estimates geometric plate cost only.

## Plate Distortion Calculator

- Publisher: Flexoworks
- URL: https://www.flexoworks.com/tools/plate-distortion-calculator
- Used for: `D (%) = (K / Repeat) × 100` and scaled image logic.
- Cross-check: Flexoworks field note, https://www.flexoworks.com/field-notes/flexo-plate-distortion
- Decision: READY when the user supplies the K value. Plate gauge is reference context, not a hard-coded default.

## Anilox / Plate Ratio Checker

- Publisher: Flexoworks
- URL: https://www.flexoworks.com/field-notes/anilox-line-screen-selection
- Cross-check: Flexopedia, https://flexopedia.net/flexoprint-mobile-application/
- Decision: READY for ratio output only. Threshold language is not enabled because application-specific rules need more verified sources.

## Ink Consumption Calculator

- References: FEFCO TS 0305 (https://www.fefco.org/download/file/fid/2683), FlexoExchange (https://flexoexchange.com/ink-consumption.html), LISHG (https://www.lishgmachine.com/tools/ink-calculator), and Flexopedia (https://flexopedia.net/flexoprint-mobile-application/).
- Decision: BLOCKED. These references document the variable-driven nature and measurement requirements, but do not yet provide two independent sources for one defined generic production formula. No formula or default parameter is shipped.

## Anilox Volume Converter

- Reference: Flexopedia, https://flexopedia.net/flexoprint-mobile-application/
- Decision: BLOCKED. The tool need is confirmed, but the conversion constant is not hard-coded without a reliable technical source.

## Flexo Setup Reference Checker

- Reference: Siegwerk, https://www.siegwerk.com/en/services/consulting/flexographic-printing-guide.html
- Decision: BLOCKED until at least three verifiable rules with clear conditions and sources are available.