Braid Aid and Braid Master are both available from Halcyon Yarns, but only use fabric strips up to 1.5".
I've been looking @ the sashers, which I think were originally designed for the QAYG method Ms. Rogers uses. It seems like, a long time ago, I saw somebody using a safety pin, or maybe a set of pins, in their ironing board to accomplish this. I would like to be able to do it for binding - get it started and then just pull though and press! Of course, now that I'm wanting to do it, I can't find the instructions...