Well despite my best endeavours nothing got done the last 2 weekends mainly cos of family things but the weekend before last was just too windy.

Anyway, was going to do it this weekend. Got it all set up and then decided to DTI the spindle from the slide and see how parallel to the ways it was. The end result was it was 0.15mm out in 80mm, but I couldnt decide if that was the tailstock being out or something else. As you will recall from a previous post i am holding the chuck end of the spindle in place using an MT3 deadcentre located in the centre hole of a JT6/MT1 arbor held in the tailstock. But the tailstock wouldnt normally be at that end of the bed so i cant tell if the error is due to the tailstock, the centres or something else...

So I decided to order an MT3-MT1 sleeve and an MT1 parallel test bar. The plan is to hold that in the spindle and locate the far end on an MT1 centre in the tailstock. That way the bar will better show the true direction of the spindle over a 300mm length and will allow me to DTI it from the slide more accurately.

The runout on the reground spindle is impressive. It doesnt even move the needle on the DTI so better than 0.0025mm!

Hopefully next weekend!