My Free Patterns

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Saturday, 21 July 2012

How to compare the thickness of two different thread

Remember this Mat #34 from here?

Marilee left a comment that I have three colour choices to proceed with this doily - green, white or yellow.
I have a ball of solid yellow that I think matches one of the colours of the HDT of the doily.

But the HDT that I used for the doily was marked size 30 and this yellow ball of thread is size 40.  However, when I feel both threads with my fingers, I think they are about the same size.  


From experience, I know that sometimes the thickness of thread show a difference even though the labels say that they are of the same size.  So, I did the number-of-rolls-round-a-pen test with these two thread to find out if they are of equal thickness.

I roll one thread 20 times round a pencil, and push the thread so that the strands lie side by side without actually squeezing them up and do the same with the other thread round a pen (don't have another pencil handy).  Putting them side-by-side like this, I can see that the thickness of the 20 strands of thread is about equal, the yellow solid on the left and the HDT on the right.


I think it is safe for me to use the yellow solid to continue with the doily.

8 comments:

  1. That's a great idea, Jon! I wish I had thought of it. : )

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  2. You are so clever! This is wonderful!

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  3. The only other way iis to do a couple of rings with both ans see how they look, but by the picture you might get away with it.
    Margaret

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  4. Very good Jon, that looks like a good match for color and size.

    Thank you for the reminder of how to tell thread size. I had used that method in the past, and then forgotten it.

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  5. Oh it sure looks about as close to a perfect match as possible! I am sure it will look just lovely!

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  6. the other way that I check for a match with threads is to tat 10 dbs check it's tatted length, then undo and check the length of cotton used. If they are similar then you should be right

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  7. What lovely lemon colour. I would never thought of measuring thread size like that. Thank you for the brilliant idea!

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  8. This is similar to the way spinners, knitters and crocheters compare yarn thickness, called WPI -- Wraps Per Inch, here's a good explanation. http://www.heartstringsfiberarts.com/wpi.shtm
    Love the yellow.

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