Weaver's Knot Characteristics and Requirements
topic
The weaver's knot tied by automatic knotters and skilled manual tyers provides a secure join that passes through heddle eyes and reed dents without causing loom stops from knot snagging, with knot diameter not exceeding 150 percent of yarn diameter for most reed and heddle configurations, knot holding strength of 60 to 80 percent of yarn breaking strength being adequate for the warp tensions encountered in weaving, and knot security being verified by tension testing of knot samples from each tying operation.
Role
Provides the mechanical join that must pull through the complete heddle and reed threading under controlled tension as the new warp is advanced through the loom, with knot size being the critical constraint that determines whether tying is feasible for specific yarn count and heddle eye combinations where fine yarns in small heddle eyes require particularly compact knots that some tying systems cannot consistently achieve.