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Old 05-23-2008, 10:13 PM   #1
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Substituting Sport Weight for Worsted Weight
Hi all,
I've never done a yarn substitution before and all the posts I've searched so far deal with substituting yarns of approximately the same weight, so this is a little different.

I have a pattern for a baby blanket in worsted weight. It uses a lace pattern. I found a sport weight yarn in the variegated colors I want to use. How do I calculate all the changes?

I know I could knit using 2 strands at a time, but what if I wanted to use just one strand? My thoughts are that if I am using a thinner yarn, I'd need to cast on more stitches to get the desired width, and I'd want to use smaller needles so that the holes in the lace would be smaller and more proportionate to the weight of the yarn. Am I thinking correctly so far?

So, how do I use the information given in the directions for the worsted weight yarn and the information printed on the sport weight yarn label to come up with the correct number of stitches to cast on, the size of the needles I'll need, not to mention the amount of yarn I'll need to purchase for the project.

Thanks in advance!!
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Old 05-24-2008, 12:39 AM   #2
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Your lace pattern should give you a number that tells you how many stitches your lace uses--usually a multiple of X plus Y. For example, if your multiple was 10 plus 3, you'd cast on the width you want using any multiple of 10 plus 3 more--13, 23, 33, 43, etc.

Use the needles called for on the yarn label and do a swatch of the lace pattern. That will give you an idea of how many repeats you'll need to get the width you want.

As for how much to buy? I'm afraid I can't really help you on that one.
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Old 05-24-2008, 09:20 AM   #3
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With lace though, you usually go up about 2 needle sizes. So if it says to use a 4 for the yarn, you'd probably want a 6.
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