I have found out a bit more about 3D objects.
Found a computer in the Warehouise then exported from Sketchup in a format that works for Twinity.
And also the scale is ok. so now there is a computer on the floor.
I think the whole Twinity situation can relate to 3D objects. The printing of data sets is just one aspect, but current for the Phjoenix in Exeter over the next couple of months. Still thinking how this fits. My actual space is also full of old computers and this needs presentation and discussion on where it is heading.