Posted by Michael Ignat on April 13, 2006 at 01:26:12:
In Reply to: How to minimize core hardness? posted by Ron V on April 11, 2006 at 07:03:26:
It might help to use caps at both ends (protecting both faces and bore).
Another possibility would be to wire EDM instead of cutting (if EDM is allowed for that part) it is obviously more expensive, but it works.
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