I need help with cutting calculations
10-31-2014, 06:48 AM
#1
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I need help with cutting calculations
I'm making 12" finished blocks set on point so I need the calculations for making the setting triangles and cornerstones. BUT the setting triangles and cornerstones are made from a nine patch with a four-patch in each corner. Hope this makes sense, I don't have access to a scanner to show the actual block.
10-31-2014, 07:04 AM
#2
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With a complicated design like this, I think we need a picture or link.
If you don't have a pattern, what I would do is make a full block for your first setting triangle & starch the heck out of it. Mark the diagonal, then sew a line of stay stitching just to one side of the diagonal. Then cut it. but NOT IN HALF, remember to add the 1/4" seam allowance past the diagonal line. Your setting triangle will have a bias edge, but with the stay stitching & careful handling you should be OK. Use this cut triangle as your pattern for the rest of the settings.
If you don't have a pattern, what I would do is make a full block for your first setting triangle & starch the heck out of it. Mark the diagonal, then sew a line of stay stitching just to one side of the diagonal. Then cut it. but NOT IN HALF, remember to add the 1/4" seam allowance past the diagonal line. Your setting triangle will have a bias edge, but with the stay stitching & careful handling you should be OK. Use this cut triangle as your pattern for the rest of the settings.
10-31-2014, 11:54 AM
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I always hated trying to do the match so I bought one of those large acrylic triangle rulers that have the lines that coordinate with cutting the setting triangles. Good job with the written explanation Jan !!
10-31-2014, 01:23 PM
#7
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Originally Posted by joyce888
I'm making 12" finished blocks set on point so I need the calculations for making the setting triangles and cornerstones. BUT the setting triangles and cornerstones are made from a nine patch with a four-patch in each corner. Hope this makes sense, I don't have access to a scanner to show the actual block.
10-31-2014, 04:21 PM
#10
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Originally Posted by tellabella
So aren't the point going to be cut off when you sew it if you cut this on the diagonal twice? Maybe I am not seeing it ...
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