fingaz said:
im not meticulous,throw the filler on initially sand with 80 grit to get 90%of the shape using a matt black dust coat ,sand to one face leaving the dust coat to the other face you then be left with a definitive line,then dust it over again and sand the face not yet sanded creating the line again.
then a couple of light skims of filler or dolphin glaze self levelling on curves its bloody great good for edges/cutting lines in as well, 120 or 180 then a quick rub over with 320 always using a dust coat all the way,then prime n carry out final finishing/shaping.