I have an interest in blades as well
I bought DesignCad 18 $(150) which works with ContourCam ($100)to drive CNC tables
I laid out an 8 foot blade in DesignCad.
It is only partially constructed.
Here is a link to an article about S222 blades
http://wind.nrel.gov/designcodes/pap...or%20HAWTs.pdf http://www.nrel.gov/docs/fy99osti/26173.pdf
Here is a Zipped copy of the stations of the blade laid out 8 foot long with S222 airfoils in Designcad format
The blade is set up for a TSR of 6 with the hub squared up.
If it was mounted on a 1 foot radius hub, the blade would be about 8 1/2 to 9 feet long.
If you can figure out how to skin it properly, ContourCam is supposed to be able to cut it out.
You can get a Designcad demo for free at
http://www.imsidesign.com/Products/D...1/Default.aspx
ContourCam is available at
http://magicsystems.com/usa/default.asp $100
I have no connection with ContourCam.
I would love to see if someone else can get it up and running
I am still working on my 10 foot table so I will be a while before I cut chips on a turbine blade.