While safety should not be discounted ...
I am looking at a machine that has sat gathering dust for 6 months or more.
Has less memoury than a £10 mobile phone
Any charge in the PSU left a long time ago. It is no more than a source of free steel.
Any coating on the metal will have gone by its 2nd use. ( and no I dont intend to use it indoors or inside a tent !!!)