  3D printing has revolutionized the manufacturing of volumetric components and
structures for various fields. Thanks to the advent of photocurable resins,
several fully volumetric light-based techniques have been recently developed to
overcome the current limitations of 3D printing. Although fast, this new
generation of printers cannot fabricate objects whose size typically exceeds
the centimeter without severely affecting the final resolution. Based on
tomographic volumetric additive manufacturing, we propose a method for
volumetric helical additive manufacturing (VHAM) multi-cm scale structures
without magnifying the projected patterns. It consists of illuminating the
photoresist while the latter follows a helical motion. This movement allows for
increasing the height of the printable object. Additionally, we off-center the
modulator used for projecting the light patterns to double the object's lateral
size. We demonstrate experimentally the interest in using these two tricks for
printing larger objects (up to 3 cm x 3 cm x 5 cm) while maintaining high
resolution (< 200 um) and short print time (< 10 min).
