In patchwork there is a well used pattern which is called a snowball. It is when a small square of fabric is sewn over each corner of a large square, at a diagonal, and the corner trimmed resulting in a sort of circle shape that vaguely looks like a snowball. As usual words don’t do this process justice so below is a set of diagrams explaining the process a bit clearer.
Whenever we use this process to cut off a corner on a shape we call it ‘snowballing’. Below are some pictures of other shapes that have had 1 – 4 corners ‘snowballed’.
This can really be useful in a lot of patchwork block patterns and can be quicker than sewing together a lot of half square triangles (click here to learn about half square triangles).
However, there are also a variety of patterns that you can make by using the full snowball block in different color variations or by adding alternate solid or nine-patch blocks between them.
Here’s a link to a video tutorial… CLICK HERE