Rolled Material Usage Planner

How to use Rolled Material Usage Planner

Choose a measured initial length or outside diameter, enter the core diameter and constant material thickness in one unit, then list ordered cuts and one trim loss per row. Entered-length accounting stays exact; a diameter-derived length has explicit mathematical pi bounds and can refuse an ambiguous near-empty withdrawal.

1. Use the example as the schema; replace its labels and entered model assumptions.
2. Choose a measured initial length or outside diameter, enter the core diameter and constant material thickness in one unit, then list ordered cuts and one trim loss per row. Entered-length accounting stays exact; a diameter-derived length has explicit mathematical pi bounds and can refuse an ambiguous near-empty withdrawal.
3. Calculate, inspect the complete witnesses and limitations, then copy or download the JSON report.

Good to know

• At most 150 withdrawals and 10,000 copies per row. Core/outside diameters and thickness are at most 1,000,000 units; thickness is positive. Measured length/cut/trim are 0–1,000,000,000 units. Geometry is an ideal tightly wound sheet; approximate diameter values are not metrology enclosures.
• Local calculation with no upload, input persistence or outside lookup. Model JSON is limited to 30,000 characters and 10,000 values. Decimal quantities are strings with up to six places; count fields use plain JSON integers. Exact fractions are capped at 8,192 bits. The complete JSON output is limited to 1,000,000 characters; approximate numbers preserve their stored values. Unsupported states fail explicitly.