Thank you for all the responses, we have now got the laser repeating to .003 and we are very happy with that. We replaces the air lines and filters and serviced the shutters this seems to have done the trick. A good tip was to remove the optic guards and run the laser without them this confirmed to us the Laser was working ok and the pribpem must be with the shutters. Once these were cleaned up and put back on it was working fine. The reason we replaced the airlines was due to them going brittle, this was our coolant causing this! Has anyone else had any issues with Blaser or Houghtons coolant?

Thanks for the replies, our laser is mounted in a housing bolted to the side of the table. It lifts up with a pneumatic cylinder on a linear guide. We have been testing the repeatability with our calibration tool this is a ground pin with a known length and diameter (129.999mm L 10.001mm dia) we get errors on that of up to .050mm. We have checked backlash and positions of X,Y,Z these are all repeating and reading good we could not find any backlash. The laser comes up to same position and this repeats each time we checked that using a slip gauge and .002mm clock on the spindle so we are quiet happy with the machine positionally. Next we are going to service the laser, clean the shutters and optics, replace the pipework and change the Blum air filters and see if we have any improvements. We have also looked at the spindle RPM this is set to 3000 on the calibration cycle. We have 8 of these on each of our DMG machines and we have no issues with any others!

All of the milling tools, turning tools are reading ok using the Renishaw touch probe.

@xirdneh1234 Hi, we have the same issue with our DMG160FD, did you get a resolve from DMG Mori? We are getting up to .05mm errors on milling tools, we even get errors using the calibration tool this can wander up to .02mm! All our other Blum tool setters repeat to .002mm