burnerIntakeMK6-8 and blast furnace SCAD

A brief tutorial on making your own blast furnace for metal casting and rapid manufacturing.
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The overview can be found here:
http://depts.washington.edu/open3dp/2014/10/rapid-manufacturing-iteration-and-industry/

Casting trouble-shooting here:
http://depts.washington.edu/open3dp/2014/11/rapid-manufacturing-mk3-detailed-walkthrough-troubleshooting-guide/

Video of the working assembly can be found here:
https://www.youtube.com/watch?v=FaLqah1V5_s