My take on this popular 3D printed object…
Why 408? Well, 1st reason: there are so many of them already on this website!
And… it’s a very easy puzzle so I guess you will find out why this particular number.
This prints in PLA with no supports provided you place to face both parts on the flat faces.
This time I’m including gcode. (0.3 draft Prusa MKS3).