Purple and Gray Strata Quilt

This quilt began as a pile of monochromatic strata.  I often sit down and create strata (improv, crazy pieced units) out of scraps when I need a bit of mindless sewing.  I added dark pink units around the lighter pink center rectangle, log cabin fashion.  The unit grew to include a final round of purple.
I decided to make a quilt, as the unit was too large for a pillow.  A large amount of negative space, using peppered shot cotton in charcoal, provided a nice space for some interesting quilting. I used matching aurifil thread and my walking foot to create a spiral from the center of the strata unit, outward.

I absolutely love the hand of the peppered shot cotton.  You can see a bit from the photos, how the warp and weft vary slightly from one another, since I cut the side and top borders the same way.  The warp and weft show slightly differently.  If this bothers you, pay attention to keeping the warp and weft oriented consistently in your border strips.

Shot cottons have a looser weave, in most cases, than quilting cottons, and in my experience can shift more when quilting.  As you may know, spiral quilting using a small home sewing machine requires a great deal of pushing and pulling through the machine throat and can result in a bit of distortion in a loosely woven fabric, especially if the quilt back is a quilting cotton which does not shift quite as much.

Even with some re-basting and unpicking, I ended up with some small tucks on the back of the quilt.  I have done spiral quilting on largish quilts, like the Tiny Log Cabin quilt, with no problem, so I surmise it the shot cotton made the difference.  I think straight-line in a single direction or free motion quilting would have gone over much better, but the manipulation required by spiral quilting a large quilt (60 x70) was not the best choice for the peppered shot cotton fabric.

Lesson learned, and hopefully someone will benefit from my experience.  The upside is that I get to keep this quilt!  I hope to use is as a sample for future classes on monochromatic strata piecing.

I'm linking to the Blogger's Quilt Festival for the first time.  Check out the link for so much inspiration.