I've been working on the concrete worktops. I have to use progressively finer grades of sanding disc. Then last week they were all covered with a slurry of runny cement, to fill in any holes and cracks, and then left to dry for a few days. So I made a start on Saturday, getting the slurry off. You grind them with a tool connected to a hose pipe, so consequently you get soaked. Hence having to dress up in my yellow waterproofs ( I don't think I have worn them since I sandblasted our house in Darlington 30 years ago!)
It is quite surprising the range of colours that the pebbles in the concrete turn out to be when they are ground down! The concrete looks great when it is wet - all shiny, but because I haven't reached the polishing stage they don't keep the shine when they dry