Light stitches dancing toy smart textiles project light stitches dancingtoy this exciting smart textiles and electronics project provides a fun way of using and understanding the properties of two smart materials muscle wire and polymorph br br a polymorph or mdf model is constructed by the student this is suspended by the muscle wire and via a set of levers on passing a current through the wire the composition of the wire changes which makes it contract the toy will then move its limb