I planned to make a video of an adult dog but I just never made the effort to video during the work.

I saw one in a video and sort of winged it. It is a mobile home axle with 1 1/2" square tubing that extends out about 6 1'2'. The platform frame makes it a 14" table. In the beginning I did not like it because it was way too free. I was thinking it would have more drag/more resistance. After working one on it I like it a lot. so much so I am going to disassemble it and move it indoors. EWO