Not feeling at my best since the bank holiday I have let this thread slip a little.
So where were we?
The only possible mounting for the read head on the X axis is the end of the Y axis table. To do this I employed a couple more offcuts of aluminium angle these slightly deeper in section than that used on the Y axis read head.
The brackets needed to fit around the Y axis lead screw so needed a bit of shaping



It did take a couple of tries to get a range of adjustment available in all the different elements of the Z shaped final mounting.
Having got this far with the mill assembled I couldn’t put off taking the mill to bits any longer to drill the end of the Y axis table.




After that it was just a case of reassembling it.