Blending, Feathering, Finishing #Blendedfamilies and #Remarriages

When I was a kid, probably all of my teenage years, My dad had me working in his auto-body repair shop afterschool and sometimes Saturdays. Besides sweeping, cleaning the tools and...sweeping, I also spent a great amount of time sanding. Where there was rust or a dent the paint had to be sanded down to the bare metal. What does this have to do with #blendedfamilies? Stay with me, you'll see.