I think some kind of compound description is the best solution for this rather than a word or two. There is the possibility of inadvertently referencing other forms of string art with a non-descriptive translation. Other forms of string art are, for example, pulled string art in which one end of the string is dipped in paint and then pulled across the paper. And string art can also be a type of weaving. Pins or nails are set up to create a dedign or pattern between them with string.