need help enlarging a pattern
12-27-2009, 03:20 AM
#1
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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
12-27-2009, 04:37 AM
#2
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Enlarging from 24" to 72" is simply three times bigger. For every piece in the pattern, subtract the ½" 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 2½" x 4½". You would subtract the seam allowances (getting 2" x 4" ), multiply by three (getting 6" x 12" ), and add back the seam allowances (getting 6½" x 12½" ). So the new measurement for cutting that piece would be 6½" x 12½". 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.
For example, say there is a cut piece in the pattern that is 2½" x 4½". You would subtract the seam allowances (getting 2" x 4" ), multiply by three (getting 6" x 12" ), and add back the seam allowances (getting 6½" x 12½" ). So the new measurement for cutting that piece would be 6½" x 12½". 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.
12-27-2009, 05:14 AM
#3
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Originally Posted by ghostrider
Enlarging from 24" to 72" is simply three times bigger. For every piece in the pattern, subtract the ½" 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 2½" x 4½". You would subtract the seam allowances (getting 2" x 4" ), multiply by three (getting 6" x 12" ), and add back the seam allowances (getting 6½" x 12½" ). So the new measurement for cutting that piece would be 6½" x 12½". 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.
For example, say there is a cut piece in the pattern that is 2½" x 4½". You would subtract the seam allowances (getting 2" x 4" ), multiply by three (getting 6" x 12" ), and add back the seam allowances (getting 6½" x 12½" ). So the new measurement for cutting that piece would be 6½" x 12½". 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.
12-29-2009, 06:41 AM
#4
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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.
01-10-2010, 02:02 PM
#5
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Originally Posted by ghostrider
Enlarging from 24" to 72" is simply three times bigger. For every piece in the pattern, subtract the ½" 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 2½" x 4½". You would subtract the seam allowances (getting 2" x 4" ), multiply by three (getting 6" x 12" ), and add back the seam allowances (getting 6½" x 12½" ). So the new measurement for cutting that piece would be 6½" x 12½". 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.
For example, say there is a cut piece in the pattern that is 2½" x 4½". You would subtract the seam allowances (getting 2" x 4" ), multiply by three (getting 6" x 12" ), and add back the seam allowances (getting 6½" x 12½" ). So the new measurement for cutting that piece would be 6½" x 12½". 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 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 ??
01-12-2010, 08:12 PM
#8
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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 ??
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