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    Old 11-30-2020, 07:32 AM
      #1  
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    Default fabric for irish plaid

    I really want to make this pattern. Can anyone give me the fabric yardage needed for a throw? or a twin size? Thank you so much in advance
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    Old 11-30-2020, 07:53 AM
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    Googling shows a few different patterns with that name. Is it the one that the block is paper pieced? https://www.quilterscache.com/I/IrishPlaidBlock.html
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    Old 11-30-2020, 09:40 AM
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    Yep, it's that one from quilterscache
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    Old 11-30-2020, 12:24 PM
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    I was just looking at the pattern and can't help you with the yardage but what I can do is welcome you to the QB from SE Michigan! Hopefully some on will come up with an answer. From what I can see it looks like it is you are using 1" strips for the plaid and larger pieces possibly 2" strips for the white. I could be wrong because I did not print out the template. I would make a sample block and keep track of how many strips you use. Maybe someone with EQ8 could figure it out for you Again jump right in and share, ask questions, and have great fun. and welcome to the QB!
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    Old 11-30-2020, 12:48 PM
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    Welcome to the Quilting Board MarDar! .... from Southern Ontario, Canada

    Oh my .... how I do like this one!
    Great pics in the link to tempt one showing some variations.
    Especially the final pic/link.

    I'd test make one block (four template pieces together), or even four sets to see how much of each fabric I used. Then use that to estimate for the size of quilt I wanted to do .... adding on some extra!!!

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    Old 11-30-2020, 01:33 PM
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    Gay
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    Just did this up in EQ & it tells me for a 60 x 70 quilt you will need

    background - 2 5/8 yds
    strips - 4 yds darkt fabric and 7 1/2 light
    extra needed for a border

    This seems a lot to me but I hear EQ is very generous, & too much fabric is better than too little.
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    Old 11-30-2020, 01:48 PM
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    Welcome to this board.
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    Old 11-30-2020, 08:52 PM
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    Originally Posted by Gay
    Just did this up in EQ & it tells me for a 60 x 70 quilt you will need

    background - 2 5/8 yds
    strips - 4 yds darkt fabric and 7 1/2 light
    extra needed for a border

    This seems a lot to me but I hear EQ is very generous, & too much fabric is better than too little.
    I'm guessing EQ gives you that much fabric for the paper piecing as it will take more than just strip piecing.
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    Old 12-01-2020, 08:16 AM
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    I got very intrigued by the results from EQ (Thanks for doing that Gay!), so I decided to work out how much fabric I thought it would take. Below is my approach:

    I printed out the template (and verified that it was printed at the correct scale - the test square measured 1"), and then measured the length and width of each shape, rounding up to the nearest quarter inch for simplicity. I added 0.5" to each width measurement (for seam allowances). I added a full inch to each length measurement - half an inch for the seam allowances, plus another half an inch to allow some overhang at each for trimming after piecing.

    Since piece number 5 is a 45 degree right triangle, the most efficient way to cut that is from slightly oversized square and then cut it along the diagonal.

    To make a block, one needs to cut and sew the main template four times, plus the center piece once, so almost all pieces need to be cut out four times for a block - except for 1 center piece, plus two squares for piece number 5.

    For cutting, I assumed cutting strips width of fabric (WOF) of the appropriate widths and then cutting as many pieces as would fit along each strip.

    I calculated the amount of fabric needed to fill a 60" x 70" space, which is 42 blocks. (The template makes 10" blocks"). (No borders are included in my calculations.) So most pieces need to be 168 times, except for the center piece (42 times) and the squares for piece 5 (84 times).

    To calculate how much yardage is needed for each piece I took the usable WOF (42") divided it by the length of the piece and rounded down to the nearest whole number (this is the number of pieces that fit in a strip). I then took the number of pieces needed (168 for most pieces) and divided by the number of pieces that fit in a strip and rounded the result up. This gave me the number of strips needed. I then took the number of strips needed and multiplied by the width.

    Adding the results together for pieces of the same fabric type I got:
    white: 60 inches (1 2/3 yards)
    light: 107.25 inches (almost 3 yards)
    dark: 56.25 inches (a little more than 1 1/2 yards)

    Now these calculations assume that fabric is perfectly square and you cut perfectly. Being a human in a less than flawless world, I would add at least an extra 1/4 yard to each fabric to be safe. (And again, no borders are included in this exercise.)

    As a software engineer, I am now very curious about what layout EQ is using for the pieces when it calculates the yardage needed!
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    Old 12-01-2020, 08:38 AM
      #10  
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    Thank you everyone for the warm welcomes and the math work. I like to plan ahead, so I actually have a few projects ahead of this one in my queue. I really love this pattern and will make it in the future. I would probably go with the larger amounts of fabric as I tend to be a little wasteful when paper piecing.
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