A few nice cnc lathe China turning images I found:
Extruder Side-view
Image by Alexanderpf
The white spacer is a PTFE (Teflon) barrier that can easily be machined on a small lathe. The barrier is drilled through 3.5mm and threaded for a M6x1 brass heater barrel. The barrel is 50mm long and has been macined out of M6x1 threaded brass rod. The barrel has been drilled out to 3.0mm (with the ends turned down to 4.5mm. The nozzel is 14mm long and made of a 7/16" brass hex rod. Drilled and tapped to M6x1. The extruder hole is 0.5mm.
These three items were ordered from eBay for .90. The nichrome wire, thermistor, kapton tape, ceramic insulation tape, and Lasercut washer were ordered from the Makerstore.
The machine screws and aluminum mount were laying around the apartment. Now I need to build a proper drive mechanism.