I dropped into the Waldorf on Saturday and asked Liam to cut my hair in a "Mark K" style. Mark (aka bobjesus) is a friend and fellow Waldorfisto with a great style:

Liam used the old "Oster" machine clippers that produces a totally different sound - actually quite a slow, relaxing sound! There are no attachments as such, you just change the actual metal blade. And these blades get hot which is actually quite nice. I got a "zero" as you can probably see from these pictures, and just lighly razored with a straight blade on top - no scissors:

Here are the "Oster" clippers: