Symptom 1: Loose Selvage Loops
Check Weft Slack| What to look for | Small loops or scallops of weft yarn poking out past the outermost warp threads on one or both edges of the band. |
|---|---|
| What to check first | Weft turn slack and placement. As the shuttle clears the shed and you change to the opposite shed, is the weft being drawn gently against the outer warp thread, or is excess slack left bunched at the turn? |
| Change one variable | Support the turn with your fingertips: As you change the shed, hold the edge with your thumb and index finger. Pull the weft until the loop gently snugs against the outermost warp thread without pulling that thread inward. Press the row into place before releasing your fingers. |
| Weave and re-measure | Weave 4–6 picks using this supported turn technique. Check whether new picks sit flush with the border threads. |
Important principle: Start by checking the weft turn and excess slack. A loose loop alone does not tell you to increase warp tension. If the sheds are also difficult to open, check your loom's setup instructions separately.