I made this from stuff laying around the yard. Cost $0
It works but I think If I got a ripping chain It would work a lot better. I ended up removing the side brace beacuase I just didnt need it. And I took out the piece of allthread and moved the hunge up the hole closer to the chain. The small pipe on the hinge is a cutup jackhandle with a nut welded on the left side and cutoff bolt inserted and welded on the right side. and black pipe is from a 3/4 inch water heater downrod extension. I also added 2 small slices about 3/4 inch wide on both sides of the hinge and tapped set screws in them so I can adjust and lock in the offset of the saw. Only about 4 inches though.