I could say that I have been saving the best for last, but that would be a lie. Although this might be the best thing I have made
I can't even claim the design as my own. I first saw this design in use at a beach in Oregon when I was a kid. I was walking with my Uncle when we saw a guy he knew rolling a big a$$ log down the beach. We helped him get it to his trailer. He was a woodworker and I remember him saying he was pretty sure it was Teak. He had cut it into pieces to move it.
My version is probably the most useful tool I have made. It will roll thru forest, over scree, uphill, downhill, this sucker goes almost anywhere! Can't count the cords of firewood moved on this contraption. Plus arrow wood, bow wood, etc...
Not much too it. A piece of grade 8 all thread with a sleeve of steel pipe, 4X4 carriage and some beefy wheels that I actually purchased. The logs pictures, I calculated at 350-400lbs.