I would like to take a complex model with many joined object and slice the whole thing in into regular slices. I have tried Bisect and Ctrl R but that doesn't work on a joined object. Any help?
You can use the Boolean modifier in intersection mode for this.
- Add a box (cube) the size of the desired slice
- Add a Boolean modifier to the object you want to cut into slices
- Position the box precisely on the slicing axis (Z in the example above).
- Duplicate the original object and apply the modifier to add a slice.
You probably could benefit from useing knife project from different views (eg. Right / Top / Left / Bottom).
Please see this solution: Knife Project.
In your case you would have to just walk through these steps multiple times, until you have the sections that you need.
The movie ['The Cell' - released year 2000] used this effect to show the internal anatomy of a horse.