I would question the use of such a heavy thread for piecing, also? I have always used a finer thread for piecing so there is less bulk in the seams.
The sites listed above are great for thread info.
I took a moment to look at your blog and want to say how nice it is. The quilt show pictures are wonderful and I really like
Jennifers' Maypole Dance.
Thanks again for t he tutorial info too.
peace