I have used this technique for years. It has saved me many times.

Whenever I start working on a car with a person who is just starting out in this hobby I make them use this technique. I get some push back. They are pretty quiet when we start putting things back together in 3 or 4 weeks. What they thought was obvious when we took it apart is no longer obvious.

The funniest story about this technique happened when 2 people I had worked with met each other for the first time. They determined that they both knew me. They immediately asked each other if I made them use the cardboard fastener holder.

Rusty