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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.
Stonehedge
@neil-bah
Im wondering if i can purchase somebody's skills..i require two new shims for a bladed corima seatpost to make it 27.2mm as the originals have begun to perish and break up. Is polymer based 3d material available likely to be up to the job of being clamped tightly to prevent slippage? and could the design be modified so that the top lips of the spacers are not at 90 degrees but rather slash cut.
i have considered that other materials may be able to do the job such as wood or maybe recycling an old round carbon seatpost.