  3D printing has revolutionized the manufacturing of volumetric components and
structures for use in various fields. Owing to the advent of photo-curable
resins, several fully volumetric light-based techniques have been recently
developed to push further the resolution and speed limitations of 3D printing.
However, these new approaches only work with homogeneous and relatively
transparent resins so that the incident light patterns used for
photo-polymerization are not impacted along their propagation through the
material. Herein, we describe a strategy to print in scattering materials. It
consists of characterizing how light is distorted by the curable resin and then
applying a digital correction to the light patterns to counteract the effect of
scattering. Using a tomographic volumetric printer, we experimentally
demonstrate the importance of taking light scattering into account when
computing the projected patterns and show that our applied correction
significantly improves printability, even when the object size exceeds the
scattering mean free path of light.
