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Half-Square Triangles!

     

Some of our half-square triangles in this step will be made into pinwheels, and some will be left single as shown.

The half square triangles will measure 2” and finish at 1-1/2” in the quilt.  The pinwheel unit will measure 3-1/2” and finish at 3” in the quilt.

For the SMALL quilt, you will need 200 half square triangles.  These will give you 25 pinwheels and 100 single half square triangles.

For the LARGE Quilt you will need 488 half square triangles. These will give you 61 pinwheels and 244 single half square triangles.

I used the Easy Angle Ruler and 2” strips to cut the units for my quilt.  You can use ANY method that gives you a half square triangle unit that measures 2” and finishes at 1-1/2” in the quilt.

If you are doing regular rotary cutting, you would cut 2-3/8” squares.  Match orange squares with right sides together and slice on the diagonal.  Sew into pairs with a scant 1/4” seam.

Working with the Easy Angle:

Place 2” strips of Orange and Yellow with right sides together.  Square off one end.  Using the 2” line on the ruler, cut strip set into matched pairs of triangles.  Each cut will yield you one unit ready to sew.

Second cut…Flip the ruler on it’s hypotenuse, bring the 2” line down to the top of the strip set with the black tip hanging below and cut.

Your cuts will look like this!

People often ask “How many strips do I need??” It all depends on the length of YOUR strips.  See what you can get out of one strip set and do some simple math to figure out how many strips you need.  I’m working with a wide variety of scraps in different lengths and the number of units I need is more important to me than the number of strips it takes to cut them.

Here is a little video we made of cutting with the Easy Angle Ruler:

http://www.youtube.com/watch?v=wQ_AoJsGJbM

Chain sew the triangle pairs with a scant 1/4” seam.

Sew a couple and press.  Measure.  If yours are coming out SMALLER than 2” square, your seam allowance is too wide.  Adjust it and sew some more and test again.  Do what you have to do to get your seam allowance where it needs to be.  Most 1/4” feet are wider than they should be.

2” square!  Right On!

4 units laid out for a Pinwheel.

Stitch the pinwheel into halves with right sides together.  Press seams toward the orange.  Place the halves with right sides together and stitch, Optimally your stitching should cross a hair to the right of the X where seams cross.

Sweet!!
Reminder: Small Quilt, Make 25.  Large Quilt, Make 61!

Spin the seams on the back of your pinwheels like this and press!

The seams are spun the same way we spin seams in 4-patches.  Be consistent with your piecing so that they all spin the same way.  For a refresher on how to do this with 4-patches click HERE.