Peter - try searching the store for "fly cutter" - that is how I initially found it. I was looking specifically for a replacement tool holder as I my 2nd hand tormach came with the fly cutter and I am embarrassed to admit I broke it within the first week - but at least I learned its limits.
Ray, I am curious to know - do you use your Glacern facemills with the TTS? I have the 3" FM45 but it's sat on the shelf since the Tormach arrived and I have not really bothered to see if there is a TTS-compatible arbor for it.