I have a new internal concrete floor that has hardened fully. It is part of a barn conversion that we have done ourselfves.  I have taken it down with very course diamond cutters using a concrete polishing machine, and am now looking to proceed with several finer grades of diamond to achieve a mid polish look, not too finished as we like the texture of an odd blemish and defect.  Crux of the query -  (Advice) with the larger defects perhaps between 2 to 5mm deep, and some a little deeper in places, with varying lengths and widths.  Rather than trying to hide them, we want to highlight them and using a resin product seems to be a first choice.  We could use clear resin to cast in interesting features, keys, coins etc and also use simple solid colours in other areas.  My question is around the products to select, how well they will bond to the concrete substrate and the factors to consider in grinding\polishing such features along with or subsequent to polishing the concrete.  I am sure this won't be an uncommon use of resins but Id like to learn\understand a little more before purchasing and casting.  Perhaps there are references and links\guides you could recommend as well as a product range?