cstrickland
Aluminum
- Joined
- Mar 31, 2011
- Location
- ohio
Ok so we have a piece of O1 tool steel that we typically drill and tap several #8-32 holes in prior to hardening to 60-62 RC (these are through holes not blind) . well it seem two holes got over looked before the hardening. looking for recommendations for a tap that will allow us to tap the last two 8-32 thread as the part sits at 60Rc
We have looked at carbide, but at that size trying to hand or machine tap 60RC there is concern the tap will break.
Have also thought or threadmill , but it is not recommended on this size hole & material hardness due to deflection.
anybody with first hand experience able to make a tap recommendation make, coating , flute configuration etc !!
Charles
We have looked at carbide, but at that size trying to hand or machine tap 60RC there is concern the tap will break.
Have also thought or threadmill , but it is not recommended on this size hole & material hardness due to deflection.
anybody with first hand experience able to make a tap recommendation make, coating , flute configuration etc !!
Charles