ratcliffe_mike When using a Delta printer 0,0 is the middle of the print bed. It looks like in the 2D and 3D views you only show the info from positive X and Y co-ordinates, which means only quarter of the image is shown:Object in Cura:2D View:3D View:
Repetier You have set x and y min to 0 and not minus radius so it clips the renderings at allowed area. See printer configuartion general tab.
