Wong,
This register is the most important part of the Collet Chuck. When the register is done it should just allow the Collet Chuck to go on the lathe spindle plate, and only just go on - with no "play". This will allow you to take the Collet Chuck off the lathe and to put it back on without any loss of accuracy.
Measuring a 'large' (small step) internal diameter with callipers with the accuracy required is damn near impossible. This is not a reflection on you, your ability or the callipers, it is just the way it is.
I think we need a more accurate way to do it.
What is really required some way to try the fit.
DaveH
This register is the most important part of the Collet Chuck. When the register is done it should just allow the Collet Chuck to go on the lathe spindle plate, and only just go on - with no "play". This will allow you to take the Collet Chuck off the lathe and to put it back on without any loss of accuracy.
Measuring a 'large' (small step) internal diameter with callipers with the accuracy required is damn near impossible. This is not a reflection on you, your ability or the callipers, it is just the way it is.
I think we need a more accurate way to do it.
What is really required some way to try the fit.
DaveH