Hi All - Been working thru the Z Axis. The ballscrew is a bit tricky as the BST dwgs are incomplete. But I've sent some Q's to BST. I went back and looked through this thread to see what I've done in the past. I also did a quick FE to check the deflection of the Z axis assembly. My target is 10N/um but only got to 4N/um. I thought about making the plate 8mm but then the flaring allowance for 8mm bends is bigger then the 6mm which means it would be much wider. So 6mm it is and I'll use YaG to make moulds for a composite Z plate in the future... Dwgs are coming together, found a few holes missing but so far so good... Peter