OK, I am getting closer to finding my next mill. - 20k rpm min.....I really want 40k - 5-axis continuous fast controller - 450 x 450 x 450mm workspace without collision 5 x 5 fixture of 98mm disks. Or actually horseshoe shape. (Dentures or full arch stuff) This is as close as I can find for new machine to meet my specs and not be too expensive. The Japanese will change Spindle to 46,000rpm Weight is over 12,000lbs Maybe close to 15k? Cost is over $300,000usd http://www.yamazen.com/products/matsuura/matsuura-mx-520/ HAAS comes close with their UMC 750 , but Spindle is too slow and too strong. Not correct machine. Same with many others.