Being the dumb guy on the board, I get to ask really dumb questions (and yes, there are dumb questions).
Why? Do you like to sew on the bias? I find that a PITB. When I make my HSTs, i always make them in pairs, make them a hair too big, and then trim that 1/4 inch or so off with a appropriately sized square ruler with diagonal marking. All my HSTs are then exactly the same size and fit together nicely without me having to worry about stretching the fabric by sewing on the bias.
Enlighten me please.
tim in san jose