HOW DO I?

**Make HST (Half Square Triangles) for Square-in-a-Square blocks for any size center square**
The Triangle Calculators make quick work of figuring the dimensions for the corner triangles needed to make a Square-in-a-Square block from any size center square.
It's straightforward to create a quilt top out of fussy cut fabric using QuiltSandwich's triangle calculators. For example, this quilt top features blocks cut from a vintage table cloth. |

**1**Determine the finished size of the center square

**2**Open Triangle Calculators in Notions — choose HALF SQUARE & CORNER Calculator

Choosing Half Square triangles for this project puts the straight of grain on the outside of the block. (Quarter Squares have their bias edges on the outside of the block, which is not ideal for this design.)

**Set switch to Corner.**This sets the diagonal on the triangle to the size of the finished side of the center square.**Set Finished Block On Point Size.**Enter finished size of the center square, in this example that is 6".- Seam allowance should be properly set to 1/4"
The calculator determines half square triangle should be cut from a 5 1/8" square.
What will be the block's finished size? The calculator says that the Finished Size of the Half Square Triangle will be 4 1/4". Two Half-Square triangles will make one side of the block — double that number 4 1/4" + 4 1/4" — for a Finished size of 8 1/2". |

**3**Cut squares to size, then into half triangles

**4**Assemble the Square-in-a-Square block