I use it to print blades for test flying my drones, just in case I have a senior moment as they are a lot cheaper to replace than the carbon fibre units.
Colin you wanted a steam winch link
Or maybe a model of HMS Victory link
Just for Ashley link
There are hundreds of sites devoted to 3D printer files and once downloaded these files can be easily manipulated to change its finished size.
As Gary said there are many different types and sizes of machine but I did my research and found the Alta the best for my needs.
Bob has raised a very pertinent point about plastic kits that I can't answer, does it remove the skill from model building or is it just a useful means to an end.
Ray, Yes it is home manufacturing that is specifically tuned to your needs.
Paul