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Thread: Formula for HSTs

  1. #1
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    Formula for HSTs

    I need to cut fabrics so that 4 HSTs sewn together will become an 8 1/2" unfinished block
    I've been experimenting and all are winding up as blocks in wrong sizes.
    Am hopeful someone can help me.

  2. #2
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    If I'm not mistaken, add 7/8 in. to your block size. I always add an inch and then trim down. HTH.

  3. #3
    Super Member irishrose's Avatar
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    You want an 8 1/2" block composed of 4 HSTs? If I read it correctly, you need each HST to be 4 1/2". Cut your squares 5 1/2 inches, put two together, draw a diagonal line and sew 1/4 on either side. Cut on the line. Press and trim the HST to 4 1/2". When you take away 1/2 for the seam there's your 8 1/2".

    You can add 1/2" and cut the squares 5", but it takes very exact sewing. The previous poster was right - usually a pattern will say add 7/8", but 1" is easier to measure and either way you have to trim so I prefer to use 1".

  4. #4
    Super Member GingerK's Avatar
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    Ummm...no, you want the block to be 8" FINISHED, right? That makes each square 4" finished. So add 7/8 inch to the FINISHED size you want--cut your squares 4 7/8" (or 5" and trim), draw a line diagonally and stitch 1/4" on either side of it.
    Last edited by GingerK; 02-10-2012 at 05:31 AM.
    Never argue with an idiot. They'll drag you down the their level and beat you with experience.

  5. #5
    Super Member GingerK's Avatar
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    I always check each square to make sure it is the size I want (in this case, 4 1/2" before sewing them into a block too.
    Never argue with an idiot. They'll drag you down the their level and beat you with experience.

  6. #6
    Power Poster joyce888's Avatar
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    They are right add 1" .
    Joyce

    Four things you can't recover: The stone.....after the throw. The word......after its said. The occasion.....after its missed. The time......after its gone

  7. #7
    Super Member Murphy1's Avatar
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    This is helpful information, I will definately save for the future.
    Murphy1
    For our wonderful Golden Retriever adopted in March of 2010.

  8. #8
    Super Member irishrose's Avatar
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    gollytwo, try it both ways and let us know. You need that HST 4 1/2" before it is sewn into your block, so cutting 4 7/8" gives you a very skimpy amount to work with and less than a 1/4" seam which would weaken a bias seam. When I wanted 6 1/2" blocks, I cut 7 1/2 " squares and didn't have much too trim.
    Last edited by irishrose; 02-10-2012 at 08:21 AM.

  9. #9
    Senior Member QuiltingCrazie's Avatar
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    I just did HST the patten said 2 7/8" squares and sewn and cut they measure 2 1/2". Trust me Im not perfect but they all turned out!! my block has 64 pieces so trimming down is not appealing for this project.
    *Rachel*

  10. #10
    Power Poster Sadiemae's Avatar
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    Quote Originally Posted by gollytwo View Post
    I need to cut fabrics so that 4 HSTs sewn together will become an 8 1/2" unfinished block
    I've been experimenting and all are winding up as blocks in wrong sizes.
    Am hopeful someone can help me.
    http://quilting.about.com/od/quiltbl...el_quilt_2.htm

    This pinwheel uses 4 7/8" squares. If I were doing this method I would probably use 5" squares and then square the hst to 4 1/2".
    Sadiemae

  11. #11
    Power Poster nativetexan's Avatar
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    i add one inch to the finished size (4 inches) and make the hst and then trim making sure my 45 degree line is on the seam.
    good luck.
    "From hence only infer that an Englishman, of all men, ought not to despise foreigners as such and I think the inference is just, since what they are today, we were yesterday, and tomorrow they will be like us"
    Daniel De Foe -The True Englishman

  12. #12
    Super Member crafty pat's Avatar
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    I do the same as NJ Quilter, I make larger and cut down to the size I need.

  13. #13
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    Thank you all very much
    Am going to start with Irish Rose' (I'm an O'Shea)
    Will let you know how it goes; won't happen right away though.
    Am obsessed at the moment with Mile-a-Minute

  14. #14
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    I just learned a new way to make HST's . You cut your 2 fabrics 2 inches larger than your finished size. You put your fabric right sides together and sew 1/4 in around all 4 sizes. You then cut diagonal in both directions (cut an X). Here is a tutorial from Missouri Star Quilt Co. http://www.youtube.com/watch?v=ekYpJzHoW6E. Also craftsy has a free BOM that shows the 2 ways to make HST. http://www.craftsy.com/ It is a great class and FREE

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