clogged drain/garbage disposal

The openings in the disposer (Disposal is a GE trademark name), determine the size of the final particles. When the openings get too large the material is not beat small enough and then it only flows a short distance down the drain before it is too heavy for the water to continue to flow it along. And then you get a stoppage. Sharpening the blades is a cop out that has no real meaning. You will find people that say putting ice cubes down the disposer will sharpen it, others say to use glass, and still others have their own remedies.The only true cure is a new disposer. : Have a clogged kitchen drain somewhere down stream from the inital trap. Had it snaked. Problem returned one day later. Ran clear by the time plumber arrived this second time. Happened again 2 days later. Plumber returned and snaked again.: Plumber said our garbage disposal was bad. The blades need sharpening. Dont use it.: Two questions: : 1) I was under the impression that a disposal ground (grind) material not cut it. I have never heard before of blades needing sharpening on a disposal. Do you have to sharpen your disposal? : 2) If the problem was with the disposal, wouldnt the clog be at the disposal? That is, for material to get past the disposal it must be broken down into fairly small pieces.: Any information or feedback would be helpful.: Thanks.