Quarter Square triangle blocks with no bias edges
#1

This is a great way to make QSTs without a bias edge. For this demonstration, I am making two-color QTS but you can easily use 4 different colors and make four-color blocks. Just pay attention to where you sew your lines.
I have marked the corner to corner lines on the back of two fabrics in pencil. These blocks are 4.5 and when cut and resewn will make a block 3-3/4 square. Not sure of the math on how to make this without squaring it to 3.5 as I just grabbed squares out of the 4.5 squares.
The secret is in where you sew The fabrics have been marked on the wrong side, in red for you to more easily see which side of the pencil line you put your Ό seam. It isnt necessary to mark your stitching line, you can just use your Ό foot. I wanted make it clearly visible where you will stitch.
Put a light and dark together, and stitch as shown. Cut along the pencil line and press to the dark. Put two together , sew Ό seam and press. And presto, no bias QST.
I have marked the corner to corner lines on the back of two fabrics in pencil. These blocks are 4.5 and when cut and resewn will make a block 3-3/4 square. Not sure of the math on how to make this without squaring it to 3.5 as I just grabbed squares out of the 4.5 squares.
The secret is in where you sew The fabrics have been marked on the wrong side, in red for you to more easily see which side of the pencil line you put your Ό seam. It isnt necessary to mark your stitching line, you can just use your Ό foot. I wanted make it clearly visible where you will stitch.
Put a light and dark together, and stitch as shown. Cut along the pencil line and press to the dark. Put two together , sew Ό seam and press. And presto, no bias QST.
#8
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Very nice tutorial. I think you could expand this in two directions to squares that are 9 inches square and quadruple the number of QSTs you get. This method is certainly easier to square up since the bias exposure is reduced. The math would need to be figured our a little more precisely and can certainly be applied to different sized QSTs. Thanks for the information.
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01-30-2011 09:14 PM