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Knit fabric weights
Is there a standard measurement?
rieski
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rieski  Friend of PR
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Date: 9/3/13 8:35 PM

Very often, online retailers include a weight in their description of a knit. For instance, they might indicate 8.5 ounces or 11 ounces, etc. I imagine that's the weight of a one-yard cut of fabric but is a standard width assumed, i.e. Either 45" or 60"?

CM_Sews
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Date: 9/3/13 8:44 PM

A quick stroll through Google-land seems to indicate that the weight is per square yard: 36-inches by 36-inches.

Some web pages refer to "a yard of fabric" without mention of the width, but I got more hits that mentioned "a square yard of fabric". Which makes sense, since, as you point out, not all fabrics are the same width.

A "square yard" would make the weight ratings consistent compared to each other.

CMC

rieski
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In reply to CM_Sews <<


Date: 9/3/13 9:29 PM

That makes a lot of sense. I never considered a 36" width but measuring it as a square yard sounds right.

Thanks very much for this.

CSM--Carla
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In reply to rieski <<
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Date: 9/3/13 9:31 PM

It means 1 square yard: 36" by 36"/

I found this thread very helpful as I recently tried to understand knit weights. Especially see this post about 1/2 way down the page regarding the weight of fabric and characteristics of the fabric:

Tissue weight: 3 oz Fluttery and very translucent; layers must be doubled, at least in the front, for t-shirts

Lightweight: 5 to 7 oz Nice drape but will show indentations made by undergarments. Some ITY knits and most of the rayon lycra print knits that I've purchased from Fabric Mart fall into this category

Midweight: 9 oz Firmer drape that skims more nicely over the body


From Michael A at the bottom of the linked page:

Measure the whole piece of fabric and then weigh it. The rest is calculation. For instance if you have 3 yards of 60" fabric and it weighs 1.3 lbs on your scale then do this. 3 yards x 60 inches/36inches per yard = 5 square yards. 1.2 lbs / 5 sq. yards = 0.24 lbs/sq yd. 0.24 lbs x 16 oz/lb = 3.84 oz/sq yd.

HepKara
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Date: 9/3/13 10:52 PM

Helpful! I struggle with what ounce of knit results in what, so that is helpful! I also recently found this: http://cjpatterns.com/fabrics.html which has some good rules of thumb as well.
What I hate is when sites just list "medium," or whatever. That's way too subjective for my tastes.

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