One of the criteria for me buying this place is the lack of trees in the yard. Thus no more need for chainsaws, wood chippers, and bush hogs.<quoted text> We should urge Dave not to play around with dangerous machinery, especially the wood chippers and Bush hogs.
But truly anything sharp and pointy , we wouldn't want to have to clean him up from all over everything.
BTW, sharp tools cause less accidents than dull tools. A few moments putting an edge on something can preclude months, years, or a lifetime wishing you had.
However, Old Dave is getting wiser and more selective assessing the risks in what he thinks just has to be done.