I almost bought one last night but came back here to have a read. I’ll stick with my Dremel and fibre cutting discs, and my Black n Decker power file and sanding discs and backing pad for my 4.5 inch. The power file is not without its issues though as I have had to replace the finger 3 times as the rubber roller wears out with constant use and then tears the belt. They’re £11.77 a time.