Math Guru’s
 

I have the Antelope Canyon Pattern and it’s too small for my taste, 74 in square. I would like to enlarge the pattern to make it King size.

https://laurieshifrindesigns.wordpre...quilt-pattern/


As listed in the fabric requirement's on the back of the pattern, this uses 2.5 in and 1.5 inch strips. What size should I increase each strip? I have googled my brain out and only found 1 article regarding enlarging it to king size, but she was the long armer, not the maker.

Here is the photo of the king size version.

http://mmmquilts.blogspot.com/2018/0...pe-canyon.html

I don't think I've had enough coffee yet. My first stab at this is if count the number of rows going up -- from the picture I got 32 (which may not be correct). You already have the seam allowances built in so don't need to worry about that!

If 32 rows = 74", then adding 1/2" to each row (regardless of size) should be 16" (32/.5 = 16) for a square of 90 (74+16).

Likewise, if you went 3/4", I get 24", or 74+25 = 98" which for me would be King sized.

You would also need to add some to the width of the strips but brain has not fully digested that part :) I am only 2 cups of coffee in for the day, but I think that will work.

Edit: Second look, maybe you don't need to add anything to the length of strips by the way it is constructed. I'd have to draw it out to verify but I think the .5 or .75 is a good head start!

You could use equivalent fractions. The original Antelope Canyon is 74" square and you want it to be about 110" square. that would make the 2 1/2" strips 3.716" wide and the 1 1/2" strips 2.229" wide. If you rounded up it would be 3 3/4" and 2 1/4". If you rounded down it would be 3" and 2".

Got a fresh cup of coffee but it's not doing much good.

I like quiltedsunshine's approach. Helps me with my numbers, from the "count the rows" that I did, for 1" added, I get 106 square -- which is maybe more your idea of kingsized. I general figure 3 yards square wihich is 108.

Still not sure on whether or not my technique would result in a square or a rectangle...

The designer said it was created as four log cabin blocks.

Maybe start looking at that way. I can see the "sashng strips" separating the four quadrants. Spectacular design

Yes, these are 4 identical quadrants……Should I add on length in addition to width?

How about adding half blocks on all sides instead of increasing
the size of the strips? Like extend those arcs.
I think the design tends to get lost when increasing the size of the
strips. Talking from personal experience. Looks fine when it's flat
or hanging on a wall but on a bed it's different. Just something
to think about. :)

Increasing each cut fabric by 1/2" would make the quilt a fourth larger. A 1" increase would make it half larger. That is my thinking. I don't do math unless it involves money. LOL

I think you have to enlarge the same percentage in both directions.

It looks like the original pattern uses 2.5 inch strips and 1.5 inch strips, so 2 inch and 1 inch finished. So each of the 4 large squares has 11 2-inch strips and 12 1-inch strips, for a total of 34 inches. The length and width of the quilt is then 2*34 (two large blocks) + 3*2 (2 borders and middle sashing), which comes to 76

if you make them finish at 3 and 1.5 (that is, make them 50% larger), the squares will be 33+18=51 inches, and the quilt will end up at 2*51 + 3*3 = 111 . That'd give you about 15" overhang on a king if it's 80" wide.

For lengths, just as an example: If the original pattern piece is 2.5 by 10.5, your enlarged version would be 3.5 by 15.5 (I think): you'd make the 50% percentage adjustment to the finished size of the piece, so 2 by 10 becomes 3 by 15 in this example, and then add the seam allowance back in, to get 3.5 by 15.5

Does that make sense? I've never done this, but it seems like a valid approach.

No math from me! I am constantly amazed what importance, and difference color choices make. The smaller one really grabbed me with that Wow feeling. With the large one, I struggle to see the design, and looking at the last pic it seemed to lose that wow feeling. I often struggle with color choices!

Just a quick stab at this. Try figuring using 2" and 3" strips would make it larger, includes seam allowances.
That should add 1/2" to every row, or 11" per block.

I agree with Anniedeb. I think the visual impact of this quilt will be lost if the circles fall way off the top of the bed. Have you considered adding borders instead to make it larger?

The quilt is actually constructed of 36" log cabin blocks with a 2" sashing. You haven't stated how big you want the quilt to be. Adding half blocks might make it too big (18+2+36+2+36+2+18=114), but you could add partial blocks all around.

The other problem with making wider strips is that you'll have to figure out the new dimensions for where each strip changes color in order to form the circle.

Another thought - make nine of each block - and think of laying them out as if each block was a double drunkards path block.
basicslly think of the arcs as the design element and ignore the rest .
I think one might end up with a serpentine effect.

i mightt try making sevral copies of the quilt pattern picture and do some cut snd pasting - and rearranging like drunkards pRh blocks and log cabin blocks.

The creator of the pattern did such a great job with each block and my mind does notvwant to reinvent that wheel

I would make four of them and sew together to make a king size with drape. The pattern would have some full circles and look amazing.

I agree with this approach (I was a math teacher in my previous life). It's exactly what I would do to enlarge it to near king size (without using strange dimensions).

Thank you so much for all your thoughts and advice, especially cat-on-a-mac & sloscotty for your fabulous math for my uncomprehending mind!
So much to consider, things I just didn’t give any thought to. It is one of many things I love about the forum, its members, and quilters in general, always willing to help and point out what may have been missed!

Thank you Tallchick for asking this question. I have the Antelope Canyon pattern and I also want to make it king size. I thought about adding borders but didn't quite like that idea. I already bought the 2 jelly rolls and the background but I'm sure I can find another use for them.

Lol, I looked at this pattern a while ago, decided it was too small for what I needed, and moved on. No way I'd even attempt to make it larger. I'll be watching to see what you do.

I like borders on most all my quilts so by adding a couple rows of sashing/borders to enlarge the quilt would be the easiest for me. I like the other suggestions I've read also like the one that said to add 1/2" to each row, that sounds doable also.