Here is why I left the back taller. This way the stand pulls double duty. I can simply flip it around if im sanding at the bench and it gives me a nice secure, out of the way place to hang the ETS. I hate just setting stuff on the bench as I tend to knock things off once and awhile. It sucks watching a expensive tool go crashing to the ground. So I always try to make a hanger to avoid that. As mentioned it has 4 plastic dogs screwed to the bottom so it can lift off and be placed anywhere on the bench but wont move around once placed in the dog holes. If there was enough interest in plans I could make them available for small fee but would need to go back and touch up the file so they could be cut with either cnc or by hand tools. The sander hanger is a little difficult to offer I use the 125 with a 150 pad so Im not 100% sure the other models are exactly the same or not. The way I made the hanger it grabs behind the plastic backer of the pad. I had seen some that just hook on the foam and I didn't like that method as there have been reports of the foam separating from the backer so I didn't want to put extra strain on the foam itself. Plus this hanger is much more secure the others looked like a small bump could pop it out of the hanger. However, this hanger requires some odd notching to achieve this. I got it close on the cnc and just put the relief carvings in by hand with a trim router on the one side to avoid making a fixture to hold the part since it would need to be flipped over and re clamped in the cnc. Seemed easier by hand for a 1 off part.