By John Hutchinson

PUBLISHED: 19:31 EST, 30 March 2012 | UPDATED: 19:36 EST, 30 March 2012

Making complex, large 3D structures would normally take hours or even days to perfect.

But researchers from the Vienna University of Technology have speeded that up - considerably - and produced grain-of-sand sized objects such as bridges, cathedrals and Formula 1 cars.

It is thought that the world record for producing the nano-objects in the quickest time has been smashed.

London calling: Here is nano-scale model of London's Tower Bridge created by a newly developed 3D printing technique for nano structures

Great work: The attention detail for such a speeded-up process is incredible, with the making of the roofing clear

The attention to detail is exquisite - and the craftsmanship is even more impressive when you appreciate the scale of the endeavour.

In the design of London's Tower Bridge, for example, you can make out details in the roof-work of the tower, as well as the railings on the actual bridge.

The little Formula 1 car is just 0.028cm across - or to put it another way, less than a third of a millimetre.

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Scientists use world's fastest 3D printer to create amazingly detailed F1 car