I'm currently trying to take a 3d model I ripped from a video game and prep it to 3d print it for a costume's prop. My problem is that the game's model is obviously made for being virtual and not physical, so it's not all in one piece.
For some reason (I'm no game designer or modeler), the model has a lot of unattached edges. All the methods I know for merging meshes aren't working, unassumingly due to these un-closed parts. I don't even know what exactly to search for to resolve this; thus I'm coming here. I have a sculpting plugin (sculpt tools) that has a nice union option, but it's not working and causes chunks to disappear. I'm using blender 2.79