we've killed two kitchenAid grinders in under a half hour TOTAL. they are plastic, they are junk. one of them exploded on us when we fed in a 1x1x5 inch strip of fatback. DO NOT treat it as if it is a commercial grinder or you will break it very quickly. It took us a couple of bad experiences to figure out that it is a wimp and needs to be molly coddled. On the flip side, if you dont treat it as a commercial grinder, it should be fine. dice the meat up into one inch pieces and feed them through no faster than the worm will accept them. Ebay may have the old style metal models, given my experience with the plastic ones i would suggest trying that.