HSTs (half square triangles)
I'm looking ahead to a couple of quilts that I'd love to make. But, they are both full of HSTs and I tend to steer away from HSTs. If I follow the rule of adding 7/8th inch, they don't seem to come out the right size. I've checked my 1/4" presser foot and my square blocks come out perfect. So, I tend to oversize my HSTs and then cut every one down. That's a lot of cutting down when there are probably hundreds of those HSTs.
So I'm looking to get perfect HSTs without having to oversize and cut them all down. What do you do to get the perfect HST?