The machine is well built and easy to dial in for making a nice smooth level concrete surface. Dust collection works well when you have sufficient air flow (my 5 gallon shop vac and vortex thing on a 5 gallon bucket setup worked well enough, when the shop vac filter was clean). My only complaint is that due to the machine's light weight, it really needs the aggressive diamond wheels that came with it to work efficiently on some surfaces (I was removing a tar-based waterproofing membrane from ancient concrete). Unfortunately, Vevor doesn't offer exact replacements and finding 7/8" arbor grinding wheels is not as easy at it might sound. I was finally able to find an aggressive enough wheel from Blue Rock, but it was too tall for the dust collector to touch the floor (problem solved with tape) and the arbor clearance on their 7/8" arbor made for quite an interference fit. If finding aggressive grinding wheels for this machine was easier (hint, hint Vevor), I'd give this five stars. I certainly wouldn't have been able to get through my whole house concrete floor job without it.
William 
