What my machine (Juki 2010-Q) calls a 1/4" seam is a fat seam! I usually use my scant 1/4" seam presser foot which makes my blocks come out right. By using the regular 1/4" mark on my Juki, it made what I would call a fat 1/4" seam and the block came out the right size, and left the outside strips 1/4" wider than the inside strips, so it will be right when its sewn into a quilt! For my Jack In The Box, I went back to my usual scant 1/4" foot and it came out right. I'm so happy they are both done and both measure exactly 10 1/2" square!
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