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# Joining binding strips

09-09-2019, 09:45 PM
#1
Super Member

Join Date: Jan 2015
Posts: 2,466
Joining binding strips

I can't believe I'm asking a math question, but here goes. When determining how many binding strips to cut, how do you calculate how much will be needed for the diagonal joins? I needed 320" of binding, which is about 8 strips. I cut nine to allow for the 8 joins. I only used about 6" of the ninth strip. My mind says that a diagonal join should use more. Do you only need about 1/2"? It's not important, but I don't like being confused.
09-09-2019, 10:43 PM
#2
Super Member

Join Date: Oct 2010
Location: desert area of California
Posts: 2,206

I too get confused so I calculate what is needed then add 10", easy to cut off extra than to add.
09-09-2019, 11:16 PM
#3
Super Member

Join Date: Jan 2015
Posts: 2,466

I think you only have to calculate losing 1/2" for each join. Nice to know when the numbers are close. This time I had plenty of extra as my LQS insists you buy 1 yard when fabric is in clearance.
09-10-2019, 12:19 AM
#4
Super Member

Join Date: Jun 2008
Location: Utah
Posts: 8,793

I use the Robert Kaufman app. Works every time for me.
09-10-2019, 12:23 AM
#5
Junior Member

Join Date: Mar 2015
Location: NE England
Posts: 212

For a diagonal join you will lose a little more than the width of your binding strip.

Your diagonal stitch line goes from corner to corner of an imaginary 'square' IYSWIM, and when you open it out you have 'lost' the length of the overlap. The extra length of binding that you add to your calculation is one 'overlap'. Overlapping the final ends of binding and cutting it longer by the measurement of the width (eg an extra 2 1/2") is how I make the final join of the binding when attaching it to the quilt. Easier to do than explain. You will also lose a little binding with the mitres on the corners.

Left over binding always come in useful for scrappy binding on Linus quilts or for scrappy patterns.
09-10-2019, 02:30 AM
#6
Super Member

Join Date: Feb 2011
Location: Boothbay Maine
Posts: 8,681

Originally Posted by Carron
I too get confused so I calculate what is needed then add 10", easy to cut off extra than to add.
I just add 10-12 inches and I’ve never come up short. (So far ��)
09-10-2019, 02:51 AM
#7
Power Poster

Join Date: Mar 2011
Posts: 38,325

I always make extra binding. I figure about 4 inches for each join and about 12 inches extra for my connecting join at the end. I keep any extra binding in a zip lock for little projects.
09-10-2019, 03:13 AM
#8
Junior Member

Join Date: Mar 2015
Location: NE England
Posts: 212

To be clear, I meant that you add one overlap per join.

Originally Posted by Bobbinalong
For a diagonal join you will lose a little more than the width of your binding strip.

Your diagonal stitch line goes from corner to corner of an imaginary 'square' IYSWIM, and when you open it out you have 'lost' the length of the overlap. The extra length of binding that you add to your calculation is one 'overlap'. Overlapping the final ends of binding and cutting it longer by the measurement of the width (eg an extra 2 1/2") is how I make the final join of the binding when attaching it to the quilt. Easier to do than explain. You will also lose a little binding with the mitres on the corners.

Left over binding always come in useful for scrappy binding on Linus quilts or for scrappy patterns.
09-10-2019, 04:14 AM
#9
Super Member

Join Date: Sep 2011
Location: Carroll, Iowa
Posts: 2,595

When I measure for my binding I take all 4 sides plus add 10". Divide it by 40 instead of 42, figure that would cover the diagonal seams I use. I've never had not enough. The leftover gets put into my 2.25" basket of scraps.
09-10-2019, 04:48 AM
#10
Super Member

Join Date: May 2010
Posts: 1,728

I have difficulty figuring out the amout too - some times straightforward and sometimes not

I have used this site for their "quilt binding calculator" with success and have always added a little but more "just in case".
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