I remember when I started collecting flashlights, a test to which I submitted them was the washing machine; a washing cycle and I saw where I had to intervene to make them better. Over the years I know from experience what I have to do, but sometimes I put them back in the washing machine.
I have only one short film of that period, it is from 2010.
Ah! I remember that I also put a small flashlight in the blender, it gave me indications on break points due to violent, continuous and destructive impact