9 patch math help
#12
Super Member
Join Date: Jun 2010
Location: The Deep South near Cajun Country, USA
Posts: 5,434
I wondered why she wanted 5 inch finished blocks, but thought that be something to do with how she wanted to put them together. She should definitely be cutting 2" squares to get her 4.5 inch finished 9 patch.
Last edited by Barb in Louisiana; 07-16-2016 at 08:00 PM.
#13
Sorry I wasn't more clear in my original post. Sometimes I think there is a block between my brain and hands. LOL!! I have lots of 5 in squares, charms, and would like to use them with a 9 patch. I cut my scraps into 5 inch squares quite often and now just need to use them.
And thanks to everyone for the math help!!! Math is my biggest foe when it comes to quilting.
And thanks to everyone for the math help!!! Math is my biggest foe when it comes to quilting.
#14
Super Member
Join Date: May 2012
Location: Central Wisconsin
Posts: 4,391
Take a five inch square and cut off the seam allowance all around. Now you have a 4.5 inch square. Cut that 4.4 inch square into three equal blocks each way. 4.5 divided by 3 = 1.5.
This is your finished size. Then you add half an inch to that measurement to get the measurement of each square in the nine patch. You need 2 inch squares to start with.
Quite a few of you got it right.
This is your finished size. Then you add half an inch to that measurement to get the measurement of each square in the nine patch. You need 2 inch squares to start with.
Quite a few of you got it right.
Last edited by maviskw; 07-17-2016 at 05:50 AM.
#15
#16
#17
As others have mentioned, it is very difficult to make any block that is made up of three section. Hence most 9 patch pattern will be 3", 4.5", 6", 7.5", 9" or 12" in size. It is one of the short comings of charm squares. You might go look thru charm square patterns if you don't want to waste too much of the fabric:
https://www.google.com/search?q=char...w=1024&bih=622
https://www.google.com/search?q=char...w=1024&bih=622
Another way to use up lots of charm squares is to make them into 4-patches which will measure 9 1/2" to finish to a 9" block which is a great size to use for most patterns. Mix them with hour glass blocks, etc.
Last edited by Just Jan; 07-18-2016 at 09:57 PM.
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