Rows of triangles via tube piecing with Irena Swanson





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Published on Nov 30, 2016

Make rows of triangles and parallelograms very fast and accurately using tube piecing. You'll be amazed how few straight seams are needed. You may also want to watch my videos on making rows of half-square triangles https://www.youtube.com/watch?v=xmCsx... and on mass marking https://www.youtube.com/watch?v=m-aOR.... More information on the method is at www.tubepiecing.com.

Check out my www.tubepiecing.com for more.

To make the top on the wall behind me, you will need several primary wide tubes.

For tip angle 90 degrees: use strip width 4+1/32 inches, scooting offset 0, tube width 2 + 31/32 inches, edge shift 1 + 1/16 inches.
I used 6 dark and 6 light strips.

For tip angle 45 degrees: strip width 4 + 5/16 inches, scooting offset 3 + 13/16 inches, tube width 3 + 23/32 inches, edge shift 5/16 inch. I used 4 dark and 4 light strips.

For tip angle 30 degrees: strip width 4 + 9/32 inches, scooting offset 6 + 17/32 inches, tube width 3 + 7/8 inches, edge shift DOWN 3/32 inch. I used 3 dark and 3 light strips.

To get the full width in a streamlined way, I used a method that I call multi-tape (inspired by bias tape construction). I plan to make a video on the multi-tape method.

The 60-degree triangles are not in the quilt behind me, but the necessary numbers for a compatible row for them are: strip width 4 + 9/32 inches, scooting offset 2 + 3/16 inches, tube width 3 + 17/32 inches, edge shift 9/16 inch. And I would use 4 dark and 4 light strips, which can contribute up to four rows to the quilt.


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