ICON mill:

I rescued this gem from being melted in 1993. It provided my first introduction to 3-axis milling, and while I use it very seldom now, I will always remember how dramatic (and difficult) adding a third dimension was for me to get used to. I was not very accomplished at 3D toolpath generation back then, and found this tool most useful for drilling glass, using diamond bits. Travel: 12"x12"x2". I spoke with ICON Industries soon after I dropped $200 for this thing at a local scrapper's. It's original use was applying solder-mask to circuit boards, and it cost ~$25,000.