Thanks guys! These have a slight bit of dampening from the rubber hose I use as a buffer on the parts but they are pretty much just straight forward machines. Not sure what you mean by "partitioned cam"? I've been building coil machines since 2001 so when I decided to make a rotary I wanted them to look similar to my coil machines and be one of a kind, have that "coil" machine look and just be something I could have a lot of fun making. I love building them.