RB - How's the ground after it's been in use?
I've thought about making one but thougth the bottom would need raising up to stop the ground being scorched. I'm only guessing though so some hard facts would be helpful.
Do you use a grate in the bottom?
Sorry Stew! I missed your question earlier on

I don't actually own one yet

When ever I see them in use, the ground certainly dries out considerably, I would imagine that with repeated use in the same spot, it would scorch or even set light to the ground, unless it was on sand or gravel.
lifting it would certainly avoid any chance of accidental ground fire.
As for a grate; none of the one's he's made so far, have had a grate fitted. The wood fuel burns to fine white ash but the amount that builds up, even after repeated burns, is quite minimal.
It seems to have little effect on the burn rate and when the stove is not in use,can easily be tipped out, onto the ground or as with the one he uses to heat the shed; just hoovered out from time to time ( when it's cold!) even better; the ash can be kept for use in making bark cordage

You could probably use an old wheel rim as a stand, this would make the stove even more stable as well as help to insulate the base from the ground.
Hope this lot helps and sorry for the delay in replying

cheers
R.B.