I bought the plastic grinder and stuffer as a kit. I've made sausage a handful of times with it. Today was my last day with it. Frankly, it barely works. The grinder is fine, slow but fine for home use. But the stuffer is useless. It took me 2 hours to stuff 5lbs f ground meet with this thing. The plunger doesn't do anything but push air into the casing. I've researched to see if I was doing anything wrong, but I can't find anything. I have 5 more lbs to do tomorrow and I am not looking forward to it all. I think I'll invest in a real sausage maker now. I love the KA mixer, but this attachment just isn't worth the effort unless you are just making a link or two.  FWIW, I have used a real stuffer and the difference is night and day.