Ok guys, I have been givin the privelege to run a 1 year old NZ2000 dual spindle/turrett mill/turn center. Its a 8 axis basicly with complete live tooling and a 4' bar feeder from LNS. We run very very tight tollerance parts (+/-.0005 and tighter on bores) and locations. Parts are small and we drill some very tiny holes .01" and smaller on some parts. The problem we are having is that when I fire it up in the morning, I have to offset all of my turning tools approx .002" on tool wear. After about 3 hours of solid running, the machine finally settles and holds tollerances for the rest of the day. This is mostly on aluminum parts that were are having the issue with. Machine a lot of 2011 bar. Is this common or is it something due to coolant temp or is the base of the machine just growing from heat? The shop is climate controled and very very clean. Some of our orders are 1,000-4,000 parts at a time of the same item. Very nice machine other than that issue. Any ideas would be good. We have looked into a chiller system as well, just waiting on a quote.