Fons and Porter Wedge Ruler question

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07-14-2016, 05:46 PM

#11

TeresaA

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Join Date: Sep 2012

Location: Washington

Posts: 855

Quote:

Originally Posted by quiltingshorttimer

if you have a 10 degree wedge you'd need 36 to make the circle and with a 9 degree you'd need 40--I have a 10 degree (not F & P) that I use for table toppers, Christmas tree skirts, play mats, etc. as it's a long one.

I know! Fun times. We'll I heard back from Fons and Porter's answer line. Answer: they don't know their wedge angle. Still wondering! so if anyone stops by and reads this and has one, it would be nice to know. I'd prefer if it was 10 degrees. However judging by our own calculations it's about 9.5 degrees, which wouldn't make a circle.

Last edited by TeresaA; 07-14-2016 at 05:49 PM.

07-28-2018, 05:18 PM

#12

HLynnM9899

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Join Date: Jul 2018

Posts: 1

I have the Fons & Porter wedger ruler... It doesn’t say on it what the degree it is but I know it is 4 inches at it’s widest & 2 inches at the narrow end & 12 inches long... if anyone is good at math could you please tell us what degree it is? I haven’t even gotten to use it yet so I don’t know if it will make a circle yet... hopefully tomorrow I will get to play with it! Just got it today...

07-29-2018, 07:36 PM

#13

quiltingshorttimer

Super Member

Join Date: Aug 2011

Location: kansas

Posts: 6,407

Quote:

Originally Posted by HLynnM9899

Can you use a protractor to measure the degree on it?

07-29-2018, 08:13 PM

#14

zozee

Super Member

Join Date: Aug 2013

Posts: 9,300

Okay, so I asked my son, who lives and breathes math and he gave a good explanation which I hope helps. He got his math genes from my dad and my hubby, not from me!!

He wrote:

If I understand the problem right, the angles on each side of the bottom wedge should be about 4.8 degrees, meaning both angles together should take up about 9.6 degrees of a full 360 degree circle. Because of the very small angle of the wedge, it would take about 37.5 of these wedges to make a full circle, if I did everything right. Pictures and math are attached

08-17-2018, 07:06 AM

#15

TeresaA

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Join Date: Sep 2012

Location: Washington

Posts: 855

Quote:

Originally Posted by zozee

...I didn't see this post when I originally asked the question. So a day late and a dollar short, thank you SO much for your reply! And thanks to your son. It's nice to have a math genius in the family ;-).

04-27-2019, 04:45 AM

#16

Rff1010

Senior Member

Join Date: Apr 2019

Posts: 836

I bought the template thinking it was a Dresden by another name. I found it needs 10 pieces to make a 1/4 circle fan. My pieces were 7" tall and the fan is 16.5" tall. The center will need to have a radius of 9.5".

For my purposes its not good but some of you more advanced quilters might make a medallion for the center (18") and then you could surround it with the circle.

(I tried to attach a picture but can't figure it out)

04-29-2019, 05:57 PM

#17

Valeriekat

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Join Date: Feb 2013

Posts: 45

I believe it is 9 degrees when you take off the seam allowances therefore 360/9 = 40 wedges but there will be a big hole in the middle as Rff1010 said and the finished "40 gon" will be 43 inches!