A professional who repairs warp yarn on loom when numerous threads are broken (breakout). Responsibilities include:

• Ties short piece of thread to each end of broken warp yarn and cuts off ends close to knot with scissors.
• Draws repaired warp yarn through drop wires, heddle eyes, and reed dents, using reed hook. Picks out filling yarn when defective weaving is observed, using fine metal comb.
• Starts loom and observes operation to detect defective setup or weaving.
• May start loom after warp change and repair breaks resulting from knots passing through drop wires, heddle eyes, and reed dents.