In the runup to SAWTA 4 I have had extra time during preparations, so I have continued work on the brass chronograph case.
I have turned a one inch piece of pvc conduit into a suitable casing ring for the Omega 321.
Now comes the turning of the case. The main challenge with this is going to get the workpiece centered properly for the final dimensioning. The 3 and 6 jaw chucks are not suitable for maintaining perfect concentricity. I will probably have to use a centering scope and the 6 jaw chuck with some shimming to get close enough when working on seperate sides of the case.