Somehow I think you understand it wrong:
I logged my char, went to my cave, made few pistols, some ammo, now I see my Craft timeout is > 60 minutes, so I can't do more. I can do *whatever* I want now (even sitting on workbench whistling, if that's what someone wants), except crafting, till it goes again below 60 minutes. If it go below 60 minutes, then it acts like previous '0' value, with additional buffer of 60 minutes you may cumulate if you wait enough.