I never realized the solar panels were so toxic. I have never done any parts for the solar industry in support of it yet for most other industries I have most of my focus being Oil related which of course is a world to itself. Machinerys Handbook invaluable not just one edition either all I can find. I am waiting for when previous editions are made available digitally which can at least satisfy my curiosity, it gives me access to the way things have been done by our predicessors. The cool stuff .