Has there never been a re-release of PVC copers, or has it all been new old stock that you can sometimes find on the internet? Snap N Grind to the rescue I guess. These are 3D printed though. These copers have printed in place hinges that act like the locks that Tracker copers had, without requiring removing the wheels to put them on. They make them for Independent, Ace, Royal, Slappy, and inexplicably, Carver. The best thing about these is the option to get a version embedded with flint for making sparks.

Hold on to your Rectors, nobody is suggesting this is a viable alternative to contemporary skateboards. It’s just an exercise that proves you could (if you wanted to) design, print and ride skateboard that is entirely 3D printed, with the exception of the mounting hardware, kingpin, and bearings. This is the Modjul 3D Printable Skateboard System, from Thingaverse user Treegemmer.