I'm not really fond of making half square triangles, but when I do, I use this method and chain piece. Put right sides together and draw a straight line from one corner to another. Sew 1/4” on either side of the line, cut on the line. This gives you two HSTs.
I also like to use my wooden iron to help with the seams. Do you ever use one of these?
This quilt has 21 of these star blocks using 16 HST. What was I thinking? I thought it might expedite the process by drawing the centerlines on a lot of blocks to give me a head start on each star block.
...and even as I don't like HSTs, especially this size, 2" finished, I love the way my Dandelion star blocks are turning out.
Lesson learned: when your machine starts acting up....check for lint. Ummm...duh.