Calculating Setting Triangles for On-Point Quilts with Sashing and Cornerstones and the Quilty Stars Table Runner

Hello Everyone! Today I’m finally sharing the finished Quilty Stars Table Runner and explaining my method for calculating the measurements to cut fabric for setting triangles.

Just a reminder for how the table runner came to be made. I started with the cross stitch pattern, Stitchy Stars by Lori Holt. I liked the star blocks and thought they would make a nice small quilt. I looked through my Lori Holt books and found all but one of the star block instructions in her Vintage Christmas book. I was able to make a simple modification for that block from one in the same book. Next, I knew I wanted to use fabrics from my Sherri and Chelsi fabric collections for Moda.

I selected four colors plus the white background then chose floss for the cross stitch to match. I did end up changing the blue Aurifloss for a darker DMC.

I am so pleased at how well they match each other.

Once I finished the blocks, it was time to decide on the setting. I was either going to do a 3 x 3 block setting, which would require two additional blocks or an on-point setting which required one extra block. I went with the on-point setting making it a little smaller, therefore I can use it as a table runner.

The colors are also great for late summer going into early fall.

I had lots of fun free motion quilting the table runner on my Pfaff QE 4.0 using Aurifil 50 wt thread. It has been quite some time since I had fun quilting swirls and feathers.

Now for the fun stuff, a little math! I wanted to use sashing and cornerstones and I did not want the cornerstones to be cut in half on the outside edges when I sewed the setting triangles to the blocks. I wanted the whole cornerstone to show.

I have made several on-point quilts, usually from patterns.

If using a pattern, the instructions will tell you what size to cut the fabric for the setting triangles. The one above does not have sashing, so it is easy to determine. You use the block size for your calculations.

If the quilt has sashing and cornerstones, those have to be considered when calculating the size to cut your fabric for the triangles. Above is my original Moda Blockheads quilt I made in 2017 and 2018. I ended up designing the setting in EQ8. I cut the fabric the size my design told me to. You can see that there is only half a cornerstone on the outside edges. I didn’t pay attention to this at the time. It was only after I started sewing the triangles to the quilt that I realized what was happening. I knew that in my new table runner, I wanted the full cornerstones on the outside edges.

After a lot of research, I could not find a way to calculate the setting triangle measurements that I wanted. After trial and error and many calculations, I determined the way to do it. As I said, you need to use the sashing and cornerstone measurements to calculate a new block size.

I’ve added a tutorial to my Tutorial Page giving you my method for determining the new block size for calculating the size to cut the fabric for the triangles. Included in the tutorial are the formulas to use and also a link to a table that you might find helpful. I hope you take a look at it and one day you might find it useful in your quilting journey.

I’ll be back next week with a cross stitch update and hopefully some more quilting. It’s been busy around here as it always seems to be. Have a great weekend and thanks for stopping by!

This entry was posted in Cross Stitch Finishes, Cross-Stitch, FMQ, minis, Tutorials, Uncategorized and tagged , , , , , , . Bookmark the permalink.

2 Responses to Calculating Setting Triangles for On-Point Quilts with Sashing and Cornerstones and the Quilty Stars Table Runner

  1. Danette says:

    Just wonderful how you were able to sew a quilt to match your cross stitch sampler!


  2. Pingback: Moda Blockheads 4 | The Quilting Nook

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