Wow - Sorry guys - I forgot about this thread. I need to get pics of that blade for you all - but I am DEEPLY happy with the results.
I used a protractor, I freehanded the cuts on the table saw, I sanded both to the same angle and used scrap 1x4 to make the unit.
I am sure it is pretty danged close to 12.5 degrees.
You simply keep the blade as level as you can (that takes a little practice to do - I wanted to have it a little too steep) but when you get used to it - it makes sharpening SO very easy.
TF