Four of Them

Following my own suggestion, I made four of the economy blocks by chain piecing them.  It did go much faster except for the bobbin that messed up and caused me to sew with air for several pieces.
I also used my suggestion to alternate values. Since my centers were multicolor and multi value, I was able to use the same center fabric for all the blocks. (and that is a print fabric, I did NOT piece tiny bits to make the center.)

They all have nice value changes, but it obvious that the two outer rounds affect the appearance of the center square.  The two with the dark touching the center seem to pop a bit more to me.  This tells me that the center square fabric is toward the lighter end of the value scale.
I will probably make more of these and see what I come up with as a layout.  I may add some other pieced blocks with it.
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