Would You Help Me With The Math, Please
#13
Super Member
Join Date: Dec 2012
Posts: 1,857
I think you may be making it harder for yourself (we all tend to do that at times). You are simply adding a strip to a charm (5" square to a 2.5" x 5" strip). Then you are adding a 2.5" square (cornerstone) to a 5" x 2.5" strip and adding that the other piece. Take a look at just one block in the quilt and it will be easier to see.
#18
Power Poster
Join Date: May 2008
Location: MN
Posts: 24,666
If you want to strip piece a "modified D9P" that will make a 9" finished ABCD unit, this might work:
The third drawing with the cutting lines should have matched the larger drawing - but I did not want to redraw it. I hope you can imagine that they are the same.
The third drawing with the cutting lines should have matched the larger drawing - but I did not want to redraw it. I hope you can imagine that they are the same.
#19
Senior Member
Join Date: Apr 2010
Location: Sunny Arizona
Posts: 476
If you do the disappearing 9 patch using 5" charms, after you cut the block in to 4, the resulting blocks will be 7", exactly the same as the original block mentioned. If you cut a charm in half you will have (2) 2.5 x 5 for the sides. If you cut a charm into 4, you will have 2.5 x 2.5 for the cornerstone.
#20
Power Poster
Join Date: May 2008
Location: MN
Posts: 24,666
j
after allowing for 1/4 inch seams, the "finished" size of the ABCD unit will be 6-1/2 inches. the "unfinished" size of the ABCD unit will be 7 inches.
the original poster sent a pm to me that she wanted to make 9 inch ABCD units, that is what the last drawings were for.
If you do the disappearing 9 patch using 5" charms, after you cut the block in to 4, the resulting blocks will be 7", exactly the same as the original block mentioned. If you cut a charm in half you will have (2) 2.5 x 5 for the sides. If you cut a charm into 4, you will have 2.5 x 2.5 for the cornerstone.
the original poster sent a pm to me that she wanted to make 9 inch ABCD units, that is what the last drawings were for.
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jetnica
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07-12-2010 07:45 AM