Felt is a non-woven fabricFabric is the outer surface of a puppet — the skin, the cl... More made by matting fibres together under heat, pressure and moisture, which gives it one defining property: no grain and no fray.
You can cut it in any direction and the edge stays clean. No hemming, no serging, no seam allowance. For a beginner that is enormous — it removes the two steps most likely to go wrong.
Where felt is the right answer
mouth linings, tongues, eyelids, teeth, tufts of hair, appliqué details, and anything with a small precise shape that would be miserable to hem. A felt-lined mouth is the standard because the colour stays flat and matte under stage light, and because you can glue it straight to the mouth plate.
Where felt is the wrong answer
the outer skin. It doesn’t stretch, so it will not pull smoothly over a curved skull. It has no pile, so every seam shows. And it pills and fuzzes with handling, which on a puppet’s face reads as grime within a few months.
Wool, acrylic or blend
Craft store felt is usually acrylic — cheap, stiff, and it pills fast. Wool felt is denser, holds a cut edge crisply, comes in richer colours, and costs several times more. Wool-blend sits in between and is what most builders settle on. For a mouth interior, where the material takes constant abrasion from the puppeteer’s hand, the blend is worth the upgrade.
The hack: cut your mouth felt oversized, glue it down, then trim flush with the plate edge after the cement has cured. Trimming to the line first guarantees a gap somewhere.