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Need help from a math wizzard!

Need help from a math wizzard!

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Old 08-30-2016, 12:07 AM
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Default Need help from a math wizzard!

I want to set my quilt on point. I know how to do that and know how to figure the setting [ATTACH=CONFIG]557166[/ATTACH]triangles. What I don't know is how to figure the size of the finished quilt. If I use 12" finished blocks and use 13 blocks, what size will the quilt be before I add borders? I sketched out what I want and when its sewn together with the setting triangles and hung straight, it will be 3 blocks across x 3 down. So do I just take the diagonal measurement of the block times 3? So for 12" blocks the diagonal measurement is 17", so 17 x 3= 51" square? Or 10" blocks would measure 14 1/8 diag. so 14 1/8 x 3 =42 3/8 before borders? This is a special quilt and I really don't want to screw it up. I do not want anything larger than a lap quilt. HELP PLEASE ! Thanks. Jan
Attached Thumbnails quiltonpointlayout.jpg  
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Old 08-30-2016, 12:42 AM
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Each side is 51" in length. it is a square quilt so it is 204 " all the way around. I got an engineering degree...that counts as a math wiz...lol
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Old 08-30-2016, 02:23 AM
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You are correct. Measure the diagonal of each square to get the length and width of your quilt. Don't forget to allow for your seam allowance.
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Old 08-30-2016, 04:52 AM
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Just Jan - you were figuring correctly
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Old 08-30-2016, 06:30 AM
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That is why I love EQ7! The program does it automatically.
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Old 08-30-2016, 09:28 AM
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Well this is interesting. I drew it up in EQ, 12" blocks. Ends up being 50.912" square. That's a difference of 8 inches between the "math whizzes" and EQ. Well, some of the math whizzes.

[ATTACH=CONFIG]557193[/ATTACH]
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Last edited by Peckish; 08-30-2016 at 09:41 AM.
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Old 08-30-2016, 09:39 AM
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Originally Posted by Jane Quilter View Post
Each side is 51" in length. it is a square quilt so it is 204 " all the way around. I got an engineering degree...that counts as a math wiz...lol
That definitely counts as a math wiz. I'm married to an engineering type who is a math wiz. He's very useful when I can't remember the formula to get a certain measurement

Jane said 51"

Last edited by cashs_mom; 08-30-2016 at 09:41 AM.
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Old 08-30-2016, 09:43 AM
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Originally Posted by Peckish View Post
Well this is interesting. I drew it up in EQ, 12" blocks. Ends up being 50.912" square. That's a difference of 8 inches between the "math whizzes" and EQ. Well, some of the math whizzes.

[ATTACH=CONFIG]557193[/ATTACH]
51.000 - 50.912 = 00.088. That is less than 1/10 of an inch difference.
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Old 08-30-2016, 11:08 AM
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A big thank you to everybody here! You are the best of the
best!


I don't have EQ and divorced a math whiz over 20 years ago...so I'll stick with this board for help! lol

Seriously, you made my day. Now I'm back working on my quilt and hopefully I can post a picture soon.

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