Just in case anyone is looking for one, I just listed a 1" 8TPI (BSW) RH tap in the marketplace, here: https://www.woodworkforums.com/f275/1-8-tpi-bsw-rh-plug-tap-184711
It's new and cost $23, so I'm selling for $20 + deliv.
I'm sure it'll sell easily, but thought I'd mention it here as well since it's a common lathe headstock spindle size.
