I have received another set of bearing holders (Thanks Jaak!!). Yesterday I mounted 2 off them at the Y-axis and I made another nut from plastic. I also made a bracket from some scrap rvs to mount the stepper. The coupling with the spindle is made from a piece of scrap brass with some bolts.
To protect the axis I’ve put some inductive end sensors on it, and on the back I’ve made a cable duct for the cables from the Z-axis.
Dutch 
