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Tips & Techniques > Yardstick Compass Set--Tip for BIAS RUFFLE

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Posted by: SewTwin

About SewTwin star
Member since: 1/13/04
Reviews: 20 (tips: 7)
Skill level:Intermediate
Favored by: 2 people
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Posted on: 5/26/09 3:07 AM
Review Rating: Helpful by 1 people   Very Helpful by 3 people   
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This Tip is to help anyone drafting BIAS RUFFLES/larger circles easily, and accurately.
The tip resulted from a sewing problem where I needed a
lo-o-ong continuous bias ruffle, approximately 44"+ at the inner circle (seamline).

I started at 12" across the "middle" of the inner circle; thinking that would give me around 48" length around the inner circle measurement. So, I would need to span 6" on each side of the center point.
My little school compass did not reach a span of 6".
I explained my dilemma to my Carpenter/Engineer DH....
He said simple, use a Yardstick Compass Set!?
He pulled a new one from his toolbox,slid the two tips(one sharp point for the center, the 2nd for the pencil tip)onto my yardstick. He said the measurement would actually be between the two tips..Much simpler, since I am a "see it, to
believe it girl"!...
This meant I could draft a circle from 1/4" to 34"(less inch for each end)
see Pic 1: Yardstick Compass Set ---

I did the 6" span, and only got about 42".. So, I just added an inch on each side of the center point; now 7" from each center point came to 45.5--YEA!!
which also gave me room to taper the ruffle at each end.
See Pic 2: Drafting BIAS RUFFLE

Sooo, here is the completed ruffle(I could only get part on the scanner).
See Pic 3: Completed BIAS RUFFLE

I know there is some? Genius math equation to compute the finished inner dimension than my caveman math?
However, if a cheap/versatile tool will get me to sewing instead, then I am a Happy Camper!
I had to use the 35" Painting Paper from Home Depot for my pattern; since my 18" freezer paper was too small. I would rather use freezer paper, since the shiny side could be ironed onto slippery fabric as a pattern.(My Quilting shows always use freezer paper for quilting patterns.)
I hope I have not made this too confusing, and maybe it will help others....
PS. I am testing this tip to see if my pictures upload. Please
advise, if you are unable to see them. Thanks SEWISTS!!!

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SoVintage said... (5/26/09 10:44 PM) Reply
Great Tip, and your link worked but I had to cut and paste to see them.
zoezmommy said... (5/26/09 10:48 AM) Reply
Wow that's great! I've dreamt of something like this but didn't know they already existed... much less what to call it!
clt3 said... (5/26/09 6:36 AM) Reply
circumference of a circle = 2 X pi X radius or 2 X 22/7 X radius
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