I have a 608, and can tell you it is a fabulous machine. The threading attachment that was shown earlier still needs the half nut engaged; it only changes the profile of the cut at each pass. Expect that the attachments that come with the lathe are likely to be the only ones you ever get, as they are EXTREMELY rare, and go for an arm and a leg on eBay. The lathe you are looking at was featured in an archive of Scientific American, and as it states, they are super-precision machines. If this helps, my lathe was owned by a machinist friend, who sold everything but his Rivett when he retired.