This is time for a bit more serious small spidle build. Tired of glued ball bearings.
I have an idea, but there are two avenues:
* traditional bored/ground trough hole with bushings
* Bored trough, two different diameters.....
I build today a gauge for 32,00 bearing nominal dimenssion, this is for fixed end and bearings will be abuted against solid outer wall. Gauge min/max diameter portions worked out pretty good. M33x1 thread did seem to come out ok, but banjo kicked out middle of it. I tried to reset gear back and got major/minor diameter right, but when I checked the thread it had too wide groove. Have to make another. And maybe couple of nuts on same go.
Not too happy with my laps yet. Started to make some cast iron laps. However, the abrassive part is harder part. So far I have used loose lapping abrassive.
Now I am trying to charge the lap with abrassive, but which abrassive to use and how to charge?
Progress so far.