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Thread: need help enlarging a pattern

  1. #1
    Super Member lisalovesquilting's Avatar
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    I was just reading that someone took a pattern from Karen Comb's book Celtic Illusions and enlarged it. The pattern is for a 24" wall hanging, and she enlarged it to 72". Not by making more blocks, just enlarged the whole thing. How would that be done? Thanks

  2. #2
    Super Member ghostrider's Avatar
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    Enlarging from 24" to 72" is simply three times bigger. For every piece in the pattern, subtract the " seam allowance from both the length and the width, multiply both by three, then add the seam allowance back to each.

    For example, say there is a cut piece in the pattern that is 2" x 4". You would subtract the seam allowances (getting 2" x 4" ), multiply by three (getting 6" x 12" ), and add back the seam allowances (getting 6" x 12" ). So the new measurement for cutting that piece would be 6" x 12". Do that for all the pieces in the pattern.

    Probably the best way to keep track of it would be to make a list of all the pattern measurements in one column and then all the enlarged measurements beside them in a second column.

  3. #3
    Super Member lisalovesquilting's Avatar
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    Quote Originally Posted by ghostrider
    Enlarging from 24" to 72" is simply three times bigger. For every piece in the pattern, subtract the " seam allowance from both the length and the width, multiply both by three, then add the seam allowance back to each.

    For example, say there is a cut piece in the pattern that is 2" x 4". You would subtract the seam allowances (getting 2" x 4" ), multiply by three (getting 6" x 12" ), and add back the seam allowances (getting 6" x 12" ). So the new measurement for cutting that piece would be 6" x 12". Do that for all the pieces in the pattern.

    Probably the best way to keep track of it would be to make a list of all the pattern measurements in one column and then all the enlarged measurements beside them in a second column.
    Thanks! That makes perfect sense. :D

  4. #4
    Super Member butterflywing's Avatar
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    since i'm lazy, i would tape the original to a window, tape a paper over it and trace. keep the original, but cut the copy into 9 pieces. remove the seam allowance. take the pieces to a copy store and enlarge each piece 3x. add the allowances back and tape the paper pattern together.

  5. #5
    Super Member janice4's Avatar
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    Quote Originally Posted by ghostrider
    Enlarging from 24" to 72" is simply three times bigger. For every piece in the pattern, subtract the " seam allowance from both the length and the width, multiply both by three, then add the seam allowance back to each.

    For example, say there is a cut piece in the pattern that is 2" x 4". You would subtract the seam allowances (getting 2" x 4" ), multiply by three (getting 6" x 12" ), and add back the seam allowances (getting 6" x 12" ). So the new measurement for cutting that piece would be 6" x 12". Do that for all the pieces in the pattern.

    Probably the best way to keep track of it would be to make a list of all the pattern measurements in one column and then all the enlarged measurements beside them in a second column.
    888888888888888888888888888888888888888

    Thanks for this info my daughter wants me to make a twin size quilt and the pattern is for a 12 x `18 inch quilt .. would this work ??

  6. #6
    Super Member Oklahoma Suzie's Avatar
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    no idea, good luck.

  7. #7
    Super Member janice4's Avatar
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    Quote Originally Posted by Oklahoma Suzie
    no idea, good luck.
    LOL:)

  8. #8
    Super Member ghostrider's Avatar
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    Quote Originally Posted by janice4
    Thanks for this info my daughter wants me to make a twin size quilt and the pattern is for a 12 x 18 inch quilt .. would this work ??
    The proportions are not the same between a 12x18 piece (length is 1.5 times width) and a twin size quilt (length is 1.3 times width), but if you are flexible in your size, it would work, yes. If you use a factor (what you would multiply all the measurements by after subtracting the seam allowance) of 5.5, your quilt would be 66x99 and if you use a factor of 6, it would be 72x108. Both of those would work for a twin bed. Does that make sense to you?

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