I would like to take a 2D coreldraw file containing the faces of a 3D construct (e.g., a box-like container with bottom, sides, internal compartment walls, and multi-faceted top) and use a 3D program to "assemble" the faces to check fit and alignment (e.g., this tab fits into that slot, this edge aligns with that angled face, etc.) before cutting the parts from corel on the laser. I'd read comments about turbocad being a decent, inexpensive 3D program so I downloaded the trial, exported my file from CD as dxf and imported into turbocad, but now I'm stuck after several hours of floundering...
Anybody know of a tutorial or documentation that would walk me through the process of grouping objects (the dxf file loses my CD groupings, so a part's outline and its internal cutouts become separate objects), extruding the grouped objects into 3D (e.g., taking each part's outline and its internal cutouts, and adding depth to match the thickness of the plywood or acrylic from which it will be cut), rotating and positioning each part to simulate assembly, and then editing to correct fit/alignment before taking the corrected design back into corel for cutting? I'm finding lots of stuff on basic drawing and using the 3D tools to create objects from scratch in turbocad, but haven't located anything like the process I just described. Thanks for any help you give.
-Glen