Thank you so much for this article.
It is of great value for all of us, and gives hope how to repair our fragile engines.
I have a question
Does it make sense to drill a very tiny hole at the end of the crack?
Cracks do continue when the tension is still in the material with different temperatures.
A tiny drilled hole stops this. And at this place a tiny little hole will not make a difference in compression.
Same as with glass-windows.
