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I think for the shape of the seatpost it would take anyone with the equipment a few minutes to just measure and model the profile of the post and then extrude/subtract from a 27.2 diameter tube. For the complexity of the object I think just popping into a machine shop would be the best bet anyway-might be the kind of thing @Hulsroy could knock off quite easily
deleted
I am not an expert but I do know that the more common 3d printable materials such as PLA and ABS certainly wouldn't be able to handle the compression required.
There are people out there with some pretty rad printers out there though. I saw some carbon reinforced filament that is supposed to be ok under compression loads but it also eats your extruder nozzle so i'd be surprised if many people use it.
If you find somebody who can print it in a suitable material I'd be happy to scan it for you but I suspect that anybody with specialist enough kit to do that kind of job would have a scanner of their own.