if you look at #4, the HST points come all the way to the center edge.
in #6, there is a seam allowance shown. the seam allowance lets you bring the top row and the bottom row together without losing the points. at least, that's how i do it.
on the #4 one, where there is no seam allowance shown, won't you lose the points when you bring the top row and the bottom row together?
this is #4
no seam allowance
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