[https://github.com/p4-team/ctf/tree/master/2020-05-10-spam-and-flags-teaser/3d_printer](https://github.com/p4-team/ctf/tree/master/2020-05-10-spam-and-flags-teaser/3d_printer)

Original writeup (https://github.com/p4-team/ctf/tree/master/2020-05-10-spam-and-flags-teaser/3d_printer).