I have wanted a cnc for years in my garage and recently found a 1985 shizuku st-n knee mill with a fanuc 6MB control that only had 50 hr run time on it.I have been able to upload programs to it but have not been able to dnc any using onecnc nclink.It has th tape reader and the rs232 port but what I have read on the web is that I need a BTR in order to dripfeed.It only has 40m bubble memory(16k)and I want to run some bigger programs.Iam looking for a used BTR or if someone knows a place that resells them I can't afford a $1000 for a new one at this time.Any help would be much appreciated