This work positions itself within the field of non-woven material design in a light and interior context. The aim of KNIT-NET is to design watermarks for papermaking through knitted textile structures. Watermarks are conventionally produced by creating a variation in the thickness of the paper fibres during the wet-paper phase of papermaking. This design is clearly visible when the paper is held up to a light source. Usually weaving techniques are used in order to filter out the water from the cellulosic pulp. Prior knowledge of plant fibre papermaking and traditional watermarking techniques was during the summer 2020. Subsequently, the ideas to explore the project further were raised during this degree project. The primary motive is to find other ways to produce water markings and texturizing to non-woven materials, by investigating knitted surfaces and yarns that will be functional in a wet process in papermaking. The material should provide organic structure and shaded pattern to the non-woven cellulosic textiles. Several cellulosic fibres were explored during this study; long staple cotton and sisal hemp fibres were the final materials of choice. The fibres were boiled and beaten into pulp, then applied on top of the knitted net designs in order to shape the paper sheets. The various knitted structures guided the choice of fibres, since the textiles affected the material properties and aesthetics of the final paper designs. The result is a collection of paper artefacts that visualise the value of non-woven paper material in an interior and light context. The muted colours becomes more visible and stronger when light is shining through. The knitted structures, in combination with the opaque and transparent cellulosic fibres, are perceived differently depending on the source of light, the direction of the light, as well as what time in the day. KNIT-NET is also a contribution to the method of utilising knitted textile structures to design watermarks for papermaking