We Lower the floor 3 times with a few distinctive metals during this section. We use our most aggressive instruments at this stage to grind the idiot so as to find out the depth for the class we must attain. (Product, Fine Combination, Tiny Aggregate, Medium Mixture and Large Aggregate) http://andrecvkzs.free-blogz.com/12942654/polishing-floor-things-to-know-before-you-buy