I'm trying to do a cell fracture to an object in order to destroy with an animation. My point is that, I would want to don't see the fracture line before the object get destroyed. For istance, is there a way to reduce the leftovere bewtween the fracture lines as in the image?
The easiest way would be to have your unfractured object invisible, then at the time of fracture swap it with the fractured object.
A trickier solution would be in Edit Mode, box select each nearby group of vertices with B, then press S to scale them and move your cursor toward them to move them together, like so:
The goal is to get the vertices near each other into the exact same position as the vertices from each object.
When you've done all the vertices, the edges are much less visible in renders: