I have found another use for SID foot, totally by accident. I use the extended metal piece as a guide when I am making my flying geese blocks. It's so much easier to keep on the line, and the geese 'flew' perfectly. My Cog's Block is an example of this!

Fold the square corner to corner
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Cut 1/4" fron the sewing line, open, press and repeat for the other side
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Sew from corner to corner, using the metal extension as a guide
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place on the rectangle piece and pin so all raw edges match up
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Perfect Flying Geese!
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Cog's Block using this method
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