change sizes of pattern

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08-25-2015, 06:47 PM

#11

Barb in Louisiana

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Join Date: Jun 2010

Location: The Deep South near Cajun Country, USA

Posts: 5,429

Most blocks that complete at 12 1/2" end up as a 12" finished block after you finish the sewing. So you have to do any calculations on the finished size, not the cutting size. So you would calculate the new size, then add back the 1/4" seam allowance on all sides.

08-25-2015, 07:31 PM

#12

Barb in Louisiana

Super Member

Join Date: Jun 2010

Location: The Deep South near Cajun Country, USA

Posts: 5,429

I took a shot of drawing it in EQ. I'm not good enough to draw the little mast or the small flag, but this is something you could start with.

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Sailboat 8x10 Rotary Cutting.pdf (113.7 KB, 80 views)

08-26-2015, 10:27 AM

#13

yngldy

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Join Date: Nov 2010

Location: SoCal

Posts: 1,813

Quote:

Originally Posted by yngldy

Take the size you want and divide by 12.5. 6.5 divided by 12.5 = 52% 8.5=68% make a copy of the diagram for the quilt at 52 or 68% (you might have to add seam allowances) and you will have the sizes needed for the pieces.

Correction of wording: Take size you want, and divide by size you have, that will give you the % that you need to reduce/enlarge. Small number divided by large number gives the %.

08-26-2015, 10:30 AM

#14

bearisgray

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Join Date: May 2008

Location: MN

Posts: 24,581

Quote:

Originally Posted by yngldy

Correction of wording: Take size you want, and divide by size you have, that will give you the % that you need to reduce/enlarge. Small number divided by large number gives the %.

If you want it larger - the answer should be greater than one.

If you want it smaller - the answer should be less than one.

08-29-2015, 04:28 PM

#15

Ngeorgia

Junior Member

Thread Starter

Join Date: Mar 2011

Posts: 157

Thanks for the info. With all the math I decided to applique it. I found this info http://www.nationalquilterscircle.co...blocks-003598/. I see that maybe one problem I was going from 12" to 8 1/2" so maybe I should have choose 9".