Check out this site to see if these are what you mean:
https://www.google.com/search?hl=en&...12.Hq55Mw_ZAs4
The reason so many "starburst" quilts were left unfinished is because it was so difficult to get the middle section - where all the points join - to lie flat. There was too often an "inny" or and "outty" (aka a "pregnancy" or a "volcano") that kept the quilt from ever lying flat enough to add the side and corner squares. This was due to the scissor cutting technique and the bias edges of all the diamond star points.
Now we know some tricks to keeping this all straight and easier, but this still can be a difficult quilt to work on. I have always discouraged most beginners from tackling it...why do beginners always want to make a 'wedding cake' before they've ever even baked 'brownies?!'
Jan in VA