 A bimetrial metamaterial with programmable coefficient of thermal expansion, CTE, was constructed using material extrusion process and its measured CTEs in various in-plane directions are in good consistency to each other, experimentally verifying the identical CTE in various in-plane directions. The positive programmable CTEs are as high as 204 and 258 ppm C, which are larger than those of basic polymers nylon and polyvinyl alcohol, PVA, while negative CTEs of minus 25 and minus 77 ppm C are obtained. The programmable CTEs are expanded to be 77 plus 258 ppm C, far beyond the literature results, supplementing the additive manufacturing and experimental basis to engineering applications. This article was offered by Kawa'i, Chelyu Jusyao, Wentau Shu, and others.