Here is a video tutorial related to tattoo machine assembly. It also has some good info about the building of the Green Monster - which is Eikon Device tattoo machine. On this tutorial we use the "True" a-bar setup - which is pretty cool. If you don't know what it is, you should check into it. If you have questions about this video please post them on the Forum. www.teachmetotattoo.com/forum and you will get a faster response.