- Joined
- May 2, 2011
- Messages
- 835
Spaceman_spliff
"Ring gauge standards accurate to millionths of an inch are specified at a certain temperature. The machining process is not less accurate because its result are a certain value at a certain temperature"
They most certainly are specified at a certain temperature, and unless the workpiece is at the identical same temperature, you will not know what its actuall size is, if it can indeed be said to posess an actuall size as at these levels of dimension actuall size depends more on temperature, which was my point.
I am not saying it is not possible to remove another tenth, what I am saying is what has been said above by several people, if you want to remove another tenth best let the job cool to room temp for 1/2 an hour then measure again, and you may find you do not need to.
Specifically, what jobs do you work on where you NEED to hold this level of accuracy on the finished components?
Phil
"Ring gauge standards accurate to millionths of an inch are specified at a certain temperature. The machining process is not less accurate because its result are a certain value at a certain temperature"
They most certainly are specified at a certain temperature, and unless the workpiece is at the identical same temperature, you will not know what its actuall size is, if it can indeed be said to posess an actuall size as at these levels of dimension actuall size depends more on temperature, which was my point.
I am not saying it is not possible to remove another tenth, what I am saying is what has been said above by several people, if you want to remove another tenth best let the job cool to room temp for 1/2 an hour then measure again, and you may find you do not need to.
Specifically, what jobs do you work on where you NEED to hold this level of accuracy on the finished components?
Phil
