Yesterday at my quilt guild I taught a class on tumbling blocks without "Y" seams. The first cut is 60 degrees. Everyone who used a 60 degree template ruler was off!!!!
Those who used their straight ruler following the 60 degree line were OK.
We measured every template ruler and they were ALL off a little bit. It didn't seem to matter what the brand was.
I was shocked!! I don't use templates -- I guess I'm old fashioned and don't want to spend money needlessly.
The initial 60 degree cut was critical to having the blocks go together in a row.
I'm doing the Dear Jane quilt and will make my own template for the triangle edges.