These are just techniques that helped me, maybe they will help you
1. I cover the open cracks with tape, to keep shavings and filing out of the open area's and helps on the clean up. "Painters tape would probably work better than my duct tape
2. Empty water bottles of water keep a part elevated while you are deburring them. Recycle
3. I keep my littil rivet gauge in my rivet box that I am working with at the moment.