yarn-substitution stub · punched ticket stubs

Count Substitute Yarn Skeins With an Honest Buffer

The pattern names metres; the shop sells skeins. Somewhere between those two numbers lives the rounding-up that saves a project — and the zero-surplus trap that wrecks one.

1 · Option code | pattern requirement metres | metres per skein

FIRST-LOAD

HYPOTHESIS / PROTOTYPE — checkout unavailable. Calculation is local. A draft is saved automatically in this browser profile when storage is available; Reset to sample clears it. Optional Pro history stores only five summaries and has its own deletion control. State links encode your inputs and can remain in browser history, clipboard or recipients’ records; share only non-sensitive rows. Optional external AI formatting leaves this device. The required site analytics beacon reports page activity; shared URLs contain encoded inputs. Do not treat an encoded URL as private. The calculator has no input-collection endpoint.

Data note: The yarn-substitution stub processes Option code | pattern requirement metres | metres per skein locally. Starter/sample selection and Run compute in this tab; no input is sent by the calculator. A local draft may be saved; explicit state-link sharing or optional external AI formatting can disclose inputs. Use non-sensitive labels.

Perspective: Before: skein counts were guessed from pattern optimism. After: each option shows its rounded-up skeins and the exact surplus metres left over.

2 · Read the yarn-substitution stub

Length arithmetic on reader-supplied metres only, not fibre, gauge or dye-lot advice. Verify the substitute yarn's suitability with a swatch and the pattern's gauge requirements before buying or casting on.

Paid layer: yarn-substitution stub filing layer

one-time step · the free reading above stays complete

hidden patterns detected after your first run

Free tier

one complete unwatermarked yarn-substitution stub run in the app
three labeled samples and unlimited article-demo calculations
complete result text and a user-triggered input-state link

What $4 one-time adds

unlimited subsequent yarn-substitution stub app calculations after a local convenience signal
print the yarn-substitution stub with visible assumptions and its safety boundary
CSV of the displayed whole skeins and row workings; conditional estimate uses your manual-retyping minutes
five local reading summaries (headline/count/time), not saved full inputs or cross-device backups

HYPOTHESIS / PROTOTYPE: $4 is a proposed one-time price for filing the yarn-substitution stub, not a current sales offer. No measured time saving or buyer demand is claimed. The optional manual-retyping baseline above estimates one export’s retyping budget only; it does not change the calculation or guarantee savings.

Local history (this device)

No saved runs yet — your first run files here.

Filing prototype — checkout unavailable

Checkout is unavailable. Browser-local, profile-scoped convenience gating is best-effort, not server-verified access. A URL or browser flag is not proof of payment. Clearing browser data removes local state; no account or cross-device recovery is provided.

Optional filing controls are a local prototype.

Checkout is unavailable. The reading above is complete; print, CSV and five local summaries are optional enhancements, not hidden answers.

Before using the yarn-substitution stub

Metres must be comparable: pattern requirements quoted in yards need converting to metres (or the whole run done in yards) before entry, and skein labels sometimes list both — use one unit convention per session. The buffer is your own risk margin added to each requirement before rounding; zero is a legal, explicit choice that means round the bare requirement. Skein metres come from the ball band of the substitute yarn, not an average remembered from another brand. The count assumes you can actually buy whole skeins of the substitute; discontinued or hand-dyed yarns may not exist in the quantity computed. Gauge compatibility, fibre behaviour and colourfastness are entirely outside this arithmetic — the stub counts skeins for a yarn you have already decided is suitable.

Boundary and sources

Method: Requirement plus buffer, divided by skein metres, rounded up to whole skeins. The buffer is your explicit allowance for swatching, tension differences and unravelling; zero means no allowance at all, which the stub will flag on exact fits. Rounding happens once, at the end — never round the intermediate division.
All sample records, dates, quantities and labels are invented. No outside policy, contract, rate, clock offset, measurement or accessibility standard is represented as verified.
Google’s official pricing documentation, fetched 2026-10-01, says AI Studio is free in available regions. Optional formatting may require a Google account; manual local entry requires none. Limits can change and free-tier content may be used to improve products. Do not send private records.

Mechanism: competence-autonomy-loop

Optional AI formatting, never the calculation

Manual entry completes this yarn-substitution stub for free without signup. If available to you, the free AI Studio interface linked in the sources may format fictional or non-sensitive notes; external access may require an account. No API key or AI call is built into this tool. Free-tier content may be used to improve products. Review each cell and transcribe it to the labeled row schema; do not paste the JSON object into the row box.

Format only these fictional or non-sensitive notes for a yarn-substitution stub. Return strict JSON shaped as {"rows": [{"label": "string", "cells": ["string", "string"]}], "setting": "string"}. The columns are Option code | pattern requirement metres | metres per skein; the setting is Buffer metres added to each requirement before rounding. Keep all supplied strings and quantities exactly; do not calculate, infer missing entries, invent dates or add advice. If any required value is missing, return an empty rows array and ask me for it separately. I will verify every cell against my source and manually transcribe rows using vertical bars before running the local calculator.

An AI response is not executed, fetched or trusted as a result. Missing values remain questions; the strict local parser checks the rows you actually enter.