I just wrote this blog post:
Hope you find it interesting/useful.
Thanks for the blog, nice straight forward easy to follow...
This is an awesome idea. Ive been pondering a 6 string build but not comfortable installing a real truss rod yet. This should give me the strength needed.
I haven't had any bowing problems yet with 4 strings. I'm using maple for the necks and either maple or rosewood for the finger boards. What have you been using for yours? It looks like oak from the pics, but I'm not great at wood identification.