I started this quilt YEARS ago and haven’t had time until recently to get back into it. 3 years since this post: Scrappy Quilt Blocks, I finally finished 42 10″x10″ blocks and sewed them in strips. Originally I hadn’t added a backing plus I added a 1/4″ seam around the block. But after realizing this was a bad idea, I used this method for joining the blocks found on YouTube: https://www.youtube.com/watch?v=ji8BLS2rNHA
Joining pieces were 3″x10″ pieces for the front, and 1.5″x10″ for the back. For the vertical joining pieces, I will need 3″x70″ for the front, and 1.5″x70″ for the back.