The Stella Maris 3 Round 57″ Square Mixer Layout was designed by Judy and Bradley Niemeyer. It includes four sections referred to as Groups J, K, L and B and these group sizes have been standardized so that you can use interchangeable blocks in each space.

The Introduction booklet includes all of the information that is common to any combination of Group J, K, L, and B blocks, including how to find corrections, general pattern information, supply lists and the final assembly steps (which are the same regardless of how you combine the interchanging blocks).