A 3D printer is a device which can directly produce objects whose shape is the same as the original 3D digital data.
Hydrogels have unique properties such as high water content, low frictional properties, biocompatibility, material
permeability and high transparency, which are rare in hard and dry materials. These superior characteristics of gels
promise useful medical applications. We have been working on the development of a 3D gel printer, SWIM-ER (Soft
and Wet Industrial – Easy Realizer), which can make models of organs and artificial blood vessels with gel material.
However, 3D printing has a problem: the mechanical properties of the printed object vary depending on printing
conditions, and this matter was investigated with SWIM-ER. In the past, we found that mechanical properties of 3D gel
objects depend on the deposition orientation in SWIM-ER. In this study, gels were printed with different laser scanning
speeds. The mechanical properties of these gels were investigated by compression tests, water content measurements and
SMILS (Scanning Microscopic Light Scattering).