Warping & Sizing
Band width and ends per centimetre must agree, or the drum builds a taper and the pattern walks.
— cm
Drum width each section occupies
Keep every section at the same ends per centimetre. A short final section winds to a different diameter and shows as a tension band in the fabric.
Sectional Warping Band Width Calculator — free, with the formula and a worked example, at Textile School.