How to Sew a Mitered Border – Triangle Masterclass

Triangles quilts are absolutely beautiful, but they can also be intimidating. Getting your blocks to turn out the right size with all of your points in the right place can be a bit of a challenge.

That’s why we created the Triangle Masterclass, a collection of eight videos focusing on different types of triangle units that are commonly used in quilts.

In today’s video I show you how to sew a mitered border. This is a technique a reserve only for when the quilt or the fabric calls for it. What I mean by that is when there are a TON of triangles in the blocks and the border and it makes visual sense to extend that 45 degree line through the border as well.

I also will use the mitered border when the fabric would look better when joined at a 45 degree angle, such as stripes or border prints.

In the video I show you how to figure out how to figure out your mitered border length. How to mark and sew the border to your quilt center so the edges are free to sew the mitered corner. And how to press so that everything is nice and flat.

In the video I am sewing the mitered border onto Raspberry Sherbet, the pattern I designed to teach the Triangle Masterclass with.

You can use this video to improve your triangle piecing on any quilt. Or you can get our pattern Raspberry Sherbet which uses all of the techniques we cover in the series. It comes in four sizes, but we made the lap version for this tutorial series.

Raspberry Sherbet is fat quarter friendly and we have quilt kits available!

We also have created a Triangle Masterclass category on our website that has in-stock fat quarter bundles that would work for this quilt in the lap size. Just add background and you’ll be good to go.

I can’t wait to make this quilt with you!

Join the Triangle Masterclass Quilt Along by downloading the Raspberry Sherbet pattern:
Raspberry Sherbet quilt kit (limited quantities):
Fat quarter bundles that would work for the lap sized version (just add 3 yards of background) plus other useful supplies:

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