Not exactly. There still has to be enough "stock" to cut threads into.
That's what I was gettin' at.
I shoulda said 'Don't worry about a little
undersize, as wood's very forgiving
.' I was a custom machine builder in a previous career, metal's a lot less forgiving.
I've seen guys store RB's in talc, corn starch, baby powder, and with some old-timers it's just what they do. I must've been lucky, my RB's never seemed to get very oily.