Video tutorial: tumbling blocks with no Y seams (Sewn up, TeresaDownUnder)
Video tutorial: No Y seams tumbling blocks - cuz i started it, but may never finish it.
How to mark and sew quilting tumbling blocks - Quilter& Slide Lock
Unique method for sewing "cube" quilt shapes with straight seams
Tumbling blocks quilt pattern, great for EPP.