Quilting Math Question

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10-13-2011, 02:34 PM

#41

ube quilting

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You all rock!

10-13-2011, 02:36 PM

#42

ube quilting

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Join Date: Jul 2010

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Posts: 10,704

Quote:

Originally Posted by luana

Try this

http://www.mathopenref.com/squarediagonals.html

This is so cool!

10-13-2011, 06:28 PM

#43

madamekelly

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Location: Central Willamette Valley, Oregon, USA

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Quote:

Originally Posted by ShowMama

Does anyone know if there is a formula for figuring the diagonal measurement of a quilt block? Say, if I make an 8" square 9-patch block, is there a formula that I can use to figure the diagonal measurement from one corner to the opposite corner? Oh, I know I could just make a block and then measure it's diagonal, but was hoping there is some easy method to figure it out on paper. I'm wanting to make a quilt with sashed blocks on point and want it to end up a certain size, but don't exactly know how big to make my blocks and sashing. Any help would be appreciated.

I had the exactly the same problem, but was fortunate at the time to have a 9 year old neighbor boy who told me the answer. He was right, but I don't know how he did it. Unfortunately he has moved away, or I would offer to ask him for you. My quilt ended up being 110 x 112, a perfect fit for me bed. Good luck.

10-14-2011, 08:38 AM

#44

ShowMama

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Join Date: Feb 2010

Location: Central Texas

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Thank you all for your help in this. I knew there were some super intelligent quilters out there and that there had to be a formula for what I need. I do usually just draw everything out on graph paper, but this time I needed to know how to figure it backwards.

I'm going to be making a wedding quilt and the bride has a certain pattern in mind. It has sashed blocks on point, but her example isn't big enough for a bed quilt. I want to enlarge the block size so I won't have to make 700 small blocks to get a large queen quilt. Now I can figure out how many 8" or 10" blocks I would need to complete the pattern she's chosen.

Thanks again for all your help!