Glow Plug Semisolid Metal Direct Writing

Previously we attempted to construct a improved semisolid metal direct write printhead using a ceramic glow plug, EDM sinker drilled through its tip and central conductive core to make a 1300 C capable heated nozzle with excellent antiwetting protperties for molten metals. Some links to that effort and its files on printables

We made a youtube video documenting our process for making the printheads.

This approach had a few problems we wrote about in our last blog post.