Hi Flop,
Welcome! Just ring the bell and someone will let you in? There is usually people there all day, but we typically recommend visitors to drop by on Thursdays since that’s our “Build Night”. These evenings, there’s usually someone available that can show you around.
As for 3D printing - we have some random filament available if you don’t need a specific color and you are free to use the printers (Ultimaker Original). Just ask someone if you’re unsure about the settings in Cura :)
J
Regards
Jens Chr Brynildsen
@jenschr