With reference to this Shapeways model, I've had a look.
https://www.shapeways.com/product/AB...li=marketplace
I note they also do a Rover 800, I'm interested in that too. They also invite requests for custom designs, so I've contacted them and asked if they would do a Mkl R75. I've mentioned that there may be some interest from within the club, so await there reply. I didn't bother to check, at this stage, whether they would do other scales, but do know that the prices via Shapeways increase massively when you go up in size I've built a number of 3D prints in model railways.
I will post on here if there are any developments.
Stewart