I have a fascination with abrasive water jet cutting. I think its amazing that water and sand can cut multi inch thick steel. I have experimented with the basic technology at relatively low pressures. Building my own intensifier and playing around with 20,000 psi water just sounds (and is) a bit too dangerous for me. A practical, low-cost, water jet system has not been a reality until now. The guys at WardJet just announced their M-Series retrofit kits.

M-Series retrofit kits transform practically any CNC machine, including milling and turning machines, lasers, routers, robotic arms and oxy-fuel or plasma cutters, into waterjet-cutting systems.

I don't have a dollar figure for this system, but my guess is in the $10-20K range. Almost in reach for serious hobbyist and a real bargain for small machine shops!