What disc do you use for grinding....? Concrete down like high spots. adhesive soft like tacky or gone off f3 Hard adhesive like ceramic Latex screed Can't think of anymore for now?
http://www.ebay.co.uk/itm/Concrete-...Home_Garden_PowerTools_SM&hash=item2a2dcf98f6 for taking down high spots, taking off lateince and tile adhesive residue. http://www.ebay.co.uk/itm/PCD-Diamo...Home_Garden_PowerTools_SM&hash=item43b7c353a2 for taking off bitumen, adhesives, etc http://www.ebay.co.uk/itm/TILE-REMO...Home_Garden_PowerTools_SM&hash=item2c70196a52 use this sort for lifting ceramics and getting the worst of the tile adhesive off. Got some coarse pads as well which I use sometimes
http://www.ebay.co.uk/itm/CONCRETE-...Home_Garden_PowerTools_SM&hash=item43b08d26ab http://www.ebay.co.uk/itm/Makita-PC...Home_Garden_PowerTools_SM&hash=item20d4865358 http://www.ebay.co.uk/itm/Makita-11...96?pt=UK_Home_Power_Tools&hash=item2a2eb78ad4