I need help with cutting calculations
#1
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.
#2
Power Poster
Join Date: Dec 2010
Location: Michigan
Posts: 11,276
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.
#5
Power Poster
Join Date: Jun 2011
Location: Southern California
Posts: 19,127
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 !!
#7
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
Yes that's the problem. This is a quilt I'm doing from a shop and she gave us this pattern for the setting blocks and to use as the setting triangles. I saw on the shop sample the points were cut off and her response was no one would notice. I noticed it and anyone with any quilting knowledge would notice. I want to make them right.
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