I wonder what the 3D printer version of a black fax would be anyway, what's the best way to waste someone's money and time?
print a cube/set the temp too high and print anything sounds good but you'd need to know the allowed dimensions of the printer to print maximum cube without the printer rejecting the command.
Doing something that makes it heat up it's print head and not do anything could be bad for someone's power bill?
I guess most 3d printers are going to give you a device name if you try to connect so you could find out what the biggest cube they'll try to print is and then do that
I dunno, not really a true "black fax" to me if you need to know anything about the receiving system other than how to connect to it, it needs to be something dead simple that takes next to no software knowhow but is incredibly annoying to have done to your machine
hilariously intricate model all but guaranteed to turn into the ol' spaghetti and meatballs, small enough to fit most any typical 3D printer, big enough to keep it busy for a while and make a mess
edit: looking into it more, you could probably just do this with basically any 3D model very much not made for 3D printing. rip a suitably spindly looking game asset or VRChat avatar (preferably unoptimized), send it off baybee
checking on your 3D printer and finding you've got a malformed waist down print of jonsey from fortnite and no filament
these have all been filament printer kills and i'd like to be clear that if you want to waste someone's time with a resin printer you dump as many unsupported models on the plate as is possible, and then you set the exposure time to 1 second (this is easy to do because both chitubox&voxeldance tango require you to put the exposure time into the print file). you'll pollute the shit out of their resin tank with all the stuff that does not actually stick to the plate, which means they can't just scrape the print off the plate and get to printing something else. also you'll inevitably waste a bunch of their resin and possibly damage the film that the tank is resting atop, so maximum damage for minimum effort