Is that advertised through Hobby Horizon? Looks like maybe $70 savings..
Not really Neil. I've been using a pic axe to trim a 90° cut right next to the wall as I cut each layer. This last cut is down to floor level now, so I'll be able to face the wall directly to trim it straight down.
I intend to dig the holes for the posts with the 850, make a 5" width trench for 8 feet length along the floor, as deep as the 850 can reach. I usually put the 10' length 4x4 posts 30" into the ground.. I'll have to measure what the 850 can do.