So for years i have always been curious how much paint I take off when wet-sanding. I have no idea how accurate this will be, but if its consistent I can at least monitor the before and after wetsanding. I get aggressive with the 800 and hell sometimes 600 when going for flat panels.. Ill report back how well or not well this unit works. Who knows it may be a complete piece of garbage. But im bored at work and this seems to be where I spend the most money