Nap is the direction the raised fibres of a fabricFabric is the outer surface of a puppet — the skin, the cl... More lie — present in fleeceFleece is the knit fabric used as the outer skin on most mod... More, faux furFaux fur is synthetic pile fabric used for puppet hair, crea..., velvet, velour and anything with a pile.
Run your hand across the surface. One direction feels smooth and the fibres lie flat. The other feels resistant and the fibres stand up. That is nap, and ignoring it is one of the most demoralising mistakes in puppet building, because it only becomes visible after everything is sewn.
Why it shows
Fibres lying flat reflect light differently than fibres standing up. Two panels cut from the same bolt in opposite directions will read as two distinct shades once they are side by side under a light. Not subtly — obviously. On camera it looks like a manufacturing defect.
The rule
Cut every piece of a given fabric with the nap running the same direction. On a puppet head, the convention is nap running downward, front to back, so the pile lies with gravity and the surface reads smooth from the audience’s angle.
How not to lose track
The moment you unroll fabric, draw an arrow on the back with chalk or a marker. Draw the arrow on every pattern piece too. Then it is a matching exercise instead of a memory exercise.
Faux fur is worse
Fur’s pile is long enough that reversed nap doesn’t just shift colour — it visibly sticks out in the wrong direction and no amount of brushing fixes it.
The hack: lay out and check all pattern pieces before cutting any of them. A misaligned piece caught on the cutting table costs a quarter yard. Caught after sewing, it costs the panel, the seam and the afternoon.