[renoirsrants.blogspot.com]

I modelled a very quick and dirty extruder design based on recent reading of everyone else's progress and nicking their ideas.

Any comments are welcome - better explanation on my blog:
[renoirsrants.blogspot.com]

DaveR

You could stick mica washers between the heating resistors and the big washer and pipe end. That would help keep the heat in the tip.