Wanna Know Wednesday - Quarter Square Triangles

After posting a few Wednesdays with the Lone Star tutorial, I'm finding it hard to determine something to write about this week.  It is hard to follow-up a tutorial!  I think this will be a simple post on Quarter Square Triangles to go with my Half Square Triangles post.

The traditional way to make QSTs is to add 1.25" to the finished size of your square.  For example, if you want a 3" finished QST block, you'll want to cut your squares at 4.25".  Unlike the HSTs where you traditionally added 7/8", adding 1.25" is an easy measurement on a ruler.  However, many times I still find that my QSTs are just a tad bit smaller than I wanted them to be.

The method I've found that works quite well is to add 1.5" to the finished size of my square.  If I want a 3" finished QST block, I'll cut my squares at 4.5".  Once your block is sewn together, its a little on the large side, but its so much easier to cut excess material off than to try to add material back onto the square.

This method is a tiny bit wasteful (all those little pieces being trimmed off), but for my own sanity, its definitely worth it!  Having blocks the right size makes it a lot easier to assemble your quilt top...and limits the amount of tears shed! :-)

Here are the steps for creating these quarter square triangles:

1. Cut your light and dark squares 1.5" larger than your finished size of the square.
2. Draw a diagonal line from one corner of the square to the other of the light material.
3. Layer 2 squares (one light and one dark) with right sides together and sew a scant 1/4" away from the diagonal line that you drew.
4. Press the entire square before cutting it apart in order to set the stitches.
5. Cut your squares apart on the diagonal line that you drew (this cut will be between the two stitched lines).
6. Press seams towards the dark material.  At this point, you will have two squares that look like half square triangles.
7. Line up two sets of the half square triangles and layer them together such that when you sew your next seams, it is perpendicular to your pressed seams.  
8. Pin the blocks together such that they won't shift during sewing.
9. Draw a diagonal line from one corner to the other of the top square.  
10. Sew a scant 1/4" away from the diagonal line.
11. Press the entire square again before cutting it apart in order to set the stitches.
12. Cut your square apart on the diagonal line that you drew (this cut will be between the two stitches lines).
13. Press seams toward one side.
14. Trim the excess material off the block to make sure that it is perfectly square and you'll have two quarter square triangles.

Below is a table of example sizes of finished squares and what size square you need to cut to achieve that final size.

Finished Size of Square	Cut Size of Squares
1.5”	3.0”
2.0”	3.5”
2.5”	4.0”
3.0”	4.5”
3.5”	5.0”
4.0”	5.5”
4.5”	6.0”
5.0”	6.5”

Happy Crafting!
~Sarah at upstateNYCreations