I made this tool to help me quickly crack up an object while maintaining material ids and uvs for the outside surface and inner fractures. it simply creates a series of planes with noise and probooleans them from the object. works pretty well, though i did add a backup button for incase a bad boolean operation happens.
Limitations include: this tool only works on one piece of geometry at a time.
usage: open clavertech-crack and click "pick object" and then pick the object u want to crack (alternatively u could select the object in the scene and press the "$" button to grab currently selected node), then either click "Generate Cracks" or click "New Rotations". (note: the tool works better if the object is not currently selected while adjusting the following parameters)Number of Cracks will determine the number of planes used for boolean operations, Thickness will determine the shell on each plane, Noise size controls the size of the noise fractal(like in the Noise Modifier),Noise Strength controls the Zoffset of the plane, and Segments controls the rez of the noise.
once ur happy with the settings, click "Crack it". if the result is undesired click the button below the "BackUp Object" label near the top.
hope this is helpful to more than just me.