This technical toy collection can be quickly and easily mounted without special tools. For example: The Crampton locomotive at HO 1/87 scale. This miniature train was inaugurated in the 1950 and 1960 years. Classical construction kits needed to be welded. The alternative is 3D printing. Collectors can now get the locomotive as a prefabricated block, which only has to be machined in the details. Products from igus® are used for axes and bearings. This innovation has been appreciated, by the “Railexpo Organisationskomitee (Organization committee) by nominating the “Crampton locomotive”,as model of the year 2016.