Then again most such work is general machine work and what's not normal is often covered pretty well in a post about the gennie anyway. Like Zubbly's aluminum housing for many smaller round neos. Not realy standard normal work for the other machine forums, but pretty well covered in Zubbly's post on his gennies.
 Alot of the work for blades might fall into a shop type catagory also where a normal wood smith could not help that much, like how to carve the proper airfoil. Much of that is already covered also though.

And for Windstuffnow's stirling engine stuff, I got interested in such things and perhaps a shop catagory would be usefull in learning some stirling or steam engine machine work also, instead of cluttering up other areas?

It's a toss up really I geuss, might be nice catagory to have, but most things get covered anyway in other areas when needed.
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nothing to lose