About this 3D model

I designed a hotend you can make from a template. Print out the template, wrap it around a metal rod, and drill anywhere you see a hole. The design uses a bowden cable as an isolator, so only the metal part requires drilling. Detailed instructions can be found [here](http://www.thingiverse.com/thing:378928/#instructions). I've been using the hotend for maybe two weeks now and it still works great. The small width of the bowden cable means there's less thermal conductance, so it makes a good isolator. I don't use a fan, and I still thermal creep is not an issue. I did notice it works better though if the bowden cable is cold when you screw it in - when it heats up, the teflon expands faster than the metal, so inserting it cold will make a firm grip when the nozzle is hot, resulting in fewer leaks.