Wooden Door - Fixing Cracked & Broken Panels - Easy, Low Cost (4K)

I was watching a guy repair a wooden boat on a beach in Thailand one day. He had some glue and a thin rope he was stuffing into the spaces between the slats. When the 25 year old wooden doors in our house started to dry out and crack, I tried caulking and such, but it did not last long and popped out.
I decided to try the boat repairman's technique and it works very well. Since 2012 only one crack has had to be redone.

https://www.youtube.com/watch?v=qtnT83v7DII



MATERIALS:
- Natural fiber string (cotton or similar)
- wood glue
- caulking