The following submission statement was provided by /u/symmetry_seeking:

Combining sonic printing with 3D scanning could create a tool to allow field medics to repair subdermal injuries on scene. How many loves would be saved from stopping internal bleeding?

Please reply to OP's comment here: https://old.reddit.com/r/Futurology/comments/10gcfp0/researchers_successfully_print_an_onject_under/j51vxfu/