Does the remaining material get recycled back into a sheet to make more? Or do they just use that to make plain old spaghetti with the left over stuff?

My personal favorite is Spaghetti Rigati. Which has little ridges along the strand to capture more sauce!!!! But is is difficult to find in stores around here.

Click image for larger version.  Name: Spaghetti Rigati.jpeg  Views: 278  Size: 58.3 KB  ID: 44385

I have also wondered why there are so many different kinds!!!! But I am a believer in "to each their own".