Try this link:
http://www.quiltblocklibrary.com/sea...p?q=idaho+star
I was recently looking for a 12 1/2" Spinning Spools pattern.....also no luck. I finally drew it out on graph paper like I wanted it to look using one square per inch. Instead of using "Y" seams, I substituted half square triangles. It took some time, but I managed and am happy with the final produjct. Good luck on your project.