Thanks. I was just looking for a model at Grabcad to see if it had all the dimensions, but I haven't found one, yet. I'd probably need to hold one of the TTS holders in my hand to understand what I have to do. The tool holders all seem to have a taper on the end that goes into their TTS holder. If I can just take my 3/4" R8 taper EM holder and grind the face flat, that taper can't be an important dimension, right? It has to be there just to help the tool changer pick it up and get it started easier (human or automatic changer).