The Kitco Cutter has become one of those tools of somewhat legendary status.  During its day, I am not sure it was a big seller and I only used them a few times.  But it seems like after the advent of lead-free glass this tool has gained a new usefulness in the neon studio and it has, more than once, shown itself to be a saver of one's bacon.  Apparently others feel the same and so there has been renewed interest and it seems I get asked where they can be bought or how can they be built with some regularity.  I had previously shared some reverse engineering information but now have tidied it up a bit.  It can be found on my blog page at:  Kitco Cutter Information  and I have also uploaded a copy to the NMG library as well.  Happy building!