Bests & Worsts Reviews from Amazon

I had a KitchenAid mixer and has been using their meat grinder for over 20 years. It is common for the housing of the plastic grinder to crack and prompted me to purchase this as a replacement. It was a big disappointment. After purchased, I had a chance to test it one month later thinking nothing wrong could happen to a grinder attachment. When tried, I found the tolerance was bad. The shaft was not centered. Since all contacts are metal to metal, any mis-alignment will create metal micro-shaving in the color of black inside the meat. Hoping this will go away after a few passages with meat strips, I found that it persisted after using up one pound of pork in vain. Additionally, the cutter and disc do not match well. When the meat has any tough tissue, the grinder head was jammed. I had no problem like this with KitchenAid grinder at all. I had to take out the unit and clean it to resume grinding. The feeder also had a problem to take in the meat. I have to push the meat with the short pusher with no success. Eventually, I had to use my fingers to push them down. (Do not tried this if you are not experienced with grinders.) Knowing these main problems, as en engineer, I tried to match the old KitchenAid parts with this grinder with zero success. Discouraged after an hour, I took out the old cracked KitchenAid grinder and finished the rest of the 30 pounds pork in 30 minutes without any issue. Now, I know why KitchenAid made their grinder in plastic housing. I will accept the housing will crack, but it works. I had many purchases from Amazon and remains a happy customer except this one. After 30 days, I cannot return it of my own fault. It is going to the trash as my expense of learning what works (or not) of a grinder attachment. Hope you do not have to do the same.