how to build a carpet mill / dog treadmill

This is a walk through of how i made a dog carpet mill. this was a quick build and used cinder blocks for legs. Very easy to put legs on this, just didnt do it. You can also put plywood on both sides of the mill (like blinders for horses) to keep down on distractions. its not the best carpet mill, but... it gets the job done.
Check out this video of my lab on the treadmill!
• Homemade carpet mill
If you choose to build one. I would love to see a video of your dog running on it. Thanks for watching.