TheMerkleFamily

I'm planning on making a large quilt made up of 5" x 9" rectangle blocks with stitch and flip (or folded) corners - similar to flying geese but done on both ends of the rectangle. There was a recent thread ISO an older Tula Pink pattern called Pancakes and while searching for it I fell in love with a picture of one made in all teal/aqua - so here I go!

My question: Which method and/or ruler do you prefer for adding the folded corners? And why?

I'm familiar with several methods and rulers but it's been awhile since I've had to make 250-300 of these blocks. I'm thinking either the exact cut squares (which produce the wasted tip) or triangles (should have less waste). With the triangles I can cut over-sized and trim down if I need to.

I'm a stickler when cutting fabric and sewing a scant 1/4" seam but my folded corners never seem to come out accurate or I lose my point. I don't have an AccuQuilt but recently picked-up the Stripology XL ruler which I think will help.

I'm curious what method you all prefer - thanks for the input!