Failed Fabric Roll Disposition Cost: Downgrade, Rework, Cut Around or Return

The formula

This is the expression the tool evaluates. Every term is named underneath, with the unit it must be supplied in.

How the result is derived

Step by step, from the values you type to the figure on screen.

1. The 12 inputs are read from the form on every keystroke: Roll Length, Fabric Width, Fabric Weight, Fabric Price, Defects on the Roll, Seconds Discount, Mending Cost per Defect, Rework Failure Rate, Length Cut Out per Defect, Cut-and-Rejoin Handling Cost, One-Way Freight and Customer Penalty on Return.
2. Each value is checked against the accepted range in the input table below. A value outside its range stops the calculation rather than producing a misleading figure — the results blank out and a message appears.
3. The validated values are substituted into the expression above, which resolves Cheapest Disposition together with every supporting figure in one pass — no value is carried over from a previous entry.
4. The supporting outputs — Loss as a Share of Roll Value, Sell as Seconds, Mend and Sell at Full Price, Cut Around the Faults, Return to Supplier, Roll Value if Sound, Length Lost Cutting Around and Roll Mass — come from the same pass, so they always describe the same case as the headline figure.
5. Results are rounded for display only. The full-precision value is used throughout the chain, so reading a rounded intermediate figure back into the tool by hand can shift the last digit.

What each input means

Where to read each value on the floor, the unit it must be in, and the range the tool accepts.

What the tool returns

The headline figure and every supporting value it is built from.

Worked example

Substituting

Returning the roll costs more than the fabric is worth, which is why suppliers argue so hard against returns and why a negotiated discount almost always settles it. The genuinely close call is mending against cutting around - 13.21 versus 13.83 - and that gap flips with the defect count, so the decision has to be made roll by roll rather than by policy.

How to use it

1. Work through the input groups in order — Roll & Value and Disposition Options. The defaults are a realistic case, so you can change one value at a time and watch what moves.
2. There is no calculate button. Every figure recalculates as you type or drag, which is what makes this usable for a what-if sweep rather than a single answer.
3. Read Cheapest Disposition in the dark results panel — that is the headline figure, expressed in the unit shown.
4. Check the supporting rows underneath (Loss as a Share of Roll Value, Sell as Seconds, Mend and Sell at Full Price, Cut Around the Faults, Return to Supplier, Roll Value if Sound, Length Lost Cutting Around and Roll Mass) before acting on the headline — they are where an implausible input usually shows itself first.
5. Reset to defaults returns every field to the reference case, which is the quickest way to check whether a surprising result came from the tool or from an input you had changed earlier.

Where this is used

• Process planning — establishing Cheapest Disposition before a trial is booked, so machine time and material in Warping, Sizing, Weaving & Fabric Formation Control are committed against a calculated figure rather than an estimate.
• Costing and quotation — Cheapest Disposition is an input to the cost sheet, and quoting from a worked number rather than a remembered one is what keeps a margin intact.
• Troubleshooting — when the floor result drifts from plan, entering the measured values (starting with Roll Length) shows how much of the gap in Cheapest Disposition each variable explains.
• Teaching and study — the accepted ranges bracket normal Warping, Sizing, Weaving & Fabric Formation Control practice, so moving one variable at a time shows the shape of the relationship rather than a single answer.

Reading the result

Typical bands and what each one is telling you.

Assumptions and limits

• Each route is costed independently and the tool reports the cheapest; it does not consider combinations, though in practice a roll is often part-mended and part-downgraded. The cut-around option ignores what short pieces are worth to the customer - a garment maker with a marker needing 8 m continuous will not accept four 3 m pieces at any price, and where that applies the route should be excluded rather than costed. The customer penalty is entered as a percentage of roll value, which is a simplification of contract terms that are often stepped or capped. Mending cost per defect is an average; a full-width fault and a small slub differ by an order of magnitude in labour. None of the four routes includes the cost of the inspection and decision itself, which is common to all of them and therefore does not affect the comparison.
• Every input is bounded to the range normal practice occupies (Roll Length 5 to 1000 m, Fabric Width 20 to 400 cm and Fabric Weight 20 to 1000 g/m2, and so on for the rest). Those bounds are guard rails against typing errors, not a claim that the formula fails one unit outside them.
• The calculation is deterministic: the same inputs always give the same result. It carries no allowance for machine condition, operator skill, ambient conditions or lot-to-lot material variation unless an input above explicitly represents one.
• Nothing is sent anywhere. The maths runs in your browser, so the numbers you type never leave the page.

Standards and further reading

• ASTM D5430 - Visually Inspecting and Grading Fabrics, which produces the failure this costs.
• ASTM D3990 - Terminology Relating to Fabric Defects.
• ISO 9001 clause 8.7 - control of nonconforming outputs, the process this supports.

Questions people ask