janie34997 wrote:
Margo, where is the seam allowance missing? Where the two are joined? Could you post a photo that shows where that is? I am using Carol Doak's doundation paper, not the vellum. Since the cut pieces are pretty accurate, it is not as critical to see through as it is with regular paper piecing. What is the dotted line at the top of the strips for? Perhaps we will need them later?
Yes Janie the missing seam allowance is where the two are joined for the longer units. If you join the other end of that foundation you need to add that seam allowance or you will come up 1/4" short.
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The dotted line at the top of the strips actually show the location of the seam allowance after the gold strip is added when the two completed triangle strips are joined. If you are paper piecing you need to just ignore the dotted line. For your foundation patterns, you just need to add 1/4" seam allowance beyond the dots of the triangles. I have marked the edges in red. For the larger units you join them where I've drawn the blue lines.
(I assume that is why there is no seam allowance there.)
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When they are joined they should look like this and should measure exactly 2-3/4" x 16-1/2". If they don't, you are not printing it correctly. Make sure that your printer is set to "no scaling" or "none". Do NOT use the "fit to area" option.
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I hope this helps.