Here's a little tip to stop a crack from getting longer in plastic or metal. Drill a small hole just at or slightly past the end of the current crack. When the crack reaches the hole it can't easily continue past.
"Hundreds of years from now it will not matter what my bank account was, the sort of house I lived in or the type of car I drove... But the world may be different because I did something so bafflingly crazy that it becomes a tourist destination"
This is awkward. I've grown a second evil head. I'm going to need a machete and a tiny ad ...
Greenhouse of the Future ebook - now free for a while