It is impossible to make a "perfect block" when several pieces of fabric are sewn together to create the block. Quilt block patterns allow
for this. Blocks are made so that they are a bit larger than needed. They are then "squared down" to the correct size. A quilter's ruler is used
to create a correct cut.
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Square Down
Pieced blocks would be impossible to create perfectly if not for "squaring down".
For example, when making a quilt block that is made from two triangles, the finished
block must be diagonally divided (seam runs through the block diagonally), perfectly straight on the sides,
and exactly the right size. A Quilter's Ruler is used to assist in this process, using a method called
"squaring down". "Square down" means that you make a block a bit larger than the needed finished size,
and trim it to the correct dimensions. You cannot merely trim off any side, however. To keep the pattern of the block
correctly proportioned, the trimming must be done in a particular manner. If not cut correctly, for example, a block
made up of two triangles might have a diagonal seam that has shifted and is no longer centered. See the figures below.
When your block is initially made, it is larger than needed, and it might not
be perfecly square. Squaring down removes "mistakes". So squaring down actually serves two purposes. It cuts the block down to the correct size, and it squares up the sides.
A "Quilter's Ruler" (also called "Quilter's Square") is used to square down a block. It is a square ruler, with inches and diagonal lines clearly marked.
The diagonal line on the ruler is lined up precisely with a diagonal line on the quilt block. A rotary cutter is used to to cut away the excess area
of the block. If scissors are used, a line can be drawn around the edge of the quilter's square to mark the cutting line.
In the figure below, a perfect 5" square block has been created. The center diagonal seam is still centered correctly after the block
has been trimmed.
Special Note: Visit our store for a non slip quilter's ruler. The non-slip backing prevents the ruler from slipping
while the fabric is being cut. This is a "must have" for all quilters. This is the type we use here at CraftAndFabricLinks.com.
