Using the infeed method of surface grinding to reduce a large
amount of material with little distortion,long periods between
dressing.  7" x 1/2 x 1-1/4" wheel, 46J, medium porosity.  
downfeed = .027", infeed = .010, heavy mist.  9" x 3-1/4" ductile
block reduced .080" in three passes of .025" - .030" per pass,
no dressing after start.