Well, we have one. But I don't know where it came from. My father's had it for a long time, he doesn't remember where he got it. But it works amazing for doorways, and I'd like to find one for myself.
So I've been looking online for a specific straight edge for seams, but I can't find it anywhere. It's a two foot flat bar, and on the bottom it's spiked, to keep the straight edge in place. Anyone heard of such a thing?