I needed a cement mixer, but I'm fundamentally lazy, so I prefer a mixer that transports to the pour and dumps hydraulicly. I'm foutunate to have an old BobCat Skid Steer and a hydraulic Auger for it. My Auger is an old McMillan that, at one time, came with an optional cement mixer drum (Rota-mixer). I didn't get the mixer with the auger, but the picture (in the McMillan manual) looked pretty simple. Remount the Auger drive horizontally (mounts were lready on the McMillan Auger frame) and mount a mixer drum to the Auger shaft. I picked up a tired old mixer without a motor for $40, and removed the drum from the cradle and frame (you'll see the cradle/frame in a post soon as my "welding positioner").The drum had a stub shaft out the back so the mount was as simple as fabbing a coupling shaft, and boring it to match the Auger stub and the mixer stub. Some creative lathe work later I had the coupling shaft. The coupling shaft is cross drilled and bolted through both the tub and auger shafts (auger shaft already drilled for the auger drive bolt). Next was a rattle can paint job and Voila! a $3,000 Skid Steer Mixer attachment for $40 and the Auger I already had.