Illusion knitting

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Shadow knitting viewed from the front, so that the message knit into the fabric is invisible

Shadow knitting viewed from the side, making the message knit into the fabric visible

Illusion knitting or shadow knitting is a form of textile art, in which the knitting is viewed as simply narrow stripes from one angle, and as an image when viewed from another angle.^[1] Illusion knitting has been recognised as an art form since 2010, largely due to the advances made by Steve Plummer who has created several large and detailed pieces. Similar effects occur in Tunisian crochet.