Product Development, Inc. | Roland MDX-40D This is the one I was going to get if I went wax only. This is from the same guy I purchased my DWX-50 from. He designed the dual puck holder for it. I think it was about $14,000.
Roland DG HOME >> Products >> 3D >> Milling Machines MODELA PROII MDX-540 Series >> Specifications I had that POS. It would not calibrate the same after Power-off (or re-home). Always chasing calibration until I gave up. Forget
axis, this was with 3+1. Please read why above. It is no secret.
If you have the "Fancy" Roland with the upgraded ball-screws for movement and not the rubber belts, then you might have 20um accuracy in the positioning of the axis when the mill is new. (This is no-load conditions)
If not, then you have 50um slop when new. Then add in spindle run-out, flexing of frame under load, etc....
Or, you could buy something German with 50x greater accuracy and 10x longer life-span, and much faster milling speeds that will also double tool life or more. Less broken margins and destruction in general.