On Wed, 19 Dec 2018 16:01:07 -0600, Terry Coombs
wrote:

Â* Will one of the better units cut wood if I use a straight nozzle ?
I'm not sure (because this idea just came to me mere seconds ago) what
kind of pressures they develop these days , but I do know for a fact
that I have used one (30 years ago in another life) To cut other
difficult materials . All these questions come about because I got a
stump . A big stump . A big red oak stump with a taproot . And it's
right smack in the way of the shelter I'm about to build to cover my
camper . I went out there on Sunday afternoon with a pick-axe , shovel ,
axe , and one of my chainsaws . I managed to chop out maybe 3 of
probably 20 or more roots about 5"-6" in diameter . Then spent the next
2 days with lower back pain . There's gotta be a better way than diggin'
and choppin' with an axe ! Then I thought about pressure washers ...

What the pressure washer will do for you is wash enough of the dirt
away so you can use a chain saw. It is messy and wear eye protection
but just pick a spot on a root, blow the dirt away and cut it. Once
you get all of the radial roots cut you can usually hook a chain
around the stump and pop it loose with your truck.