I bought a Festool RoteX sander at auction. I really like it, very powerful and over priced.
In the on going saga of changing the conveyor belt on my Performax over and over, I needed something to sit on. The Performax is mounted on a roll around cabinet about knee high. I ended up using the Systainer for the Rotex sander.
So now it has a new capability. I guess it a Fes-stool.