I am using S3D and have loaded a large object. When the stl file is loaded it shows just fine. Also included in this initial view is a 3d outline of a box. Does this box represent the build volume of the printer specified? I have specified FF Creator Pro. On the Process setting "G code" tab, it shows a build volume of 225 for X, 145 for Y and 150 for Z. So if that 3D box does represent the build volume limit of the printer, why doesn't S3D provide a warning that the limit has been exceeded by the loaded model?