Vandegraaff
Plastic
- Joined
- Dec 14, 2019
This isn't a SB specific question but don't know where else to post. Just bought internal threading bar with insert. Bar has flats on top and bottom for registering it in my 250 series QCTH.
Why is the insert angle not parallel to flats on bar? I was taught threading tool should be 90 deg both horizontal and vertical to centerline? With this set-up, my insert will be pointing down, maybe 10 degrees. Assume I still put the point on the centerline but then insert will have a 10 deg downward rake? Is this a quirk of internal inserts My inserts for external threading are straight in.
Why is the insert angle not parallel to flats on bar? I was taught threading tool should be 90 deg both horizontal and vertical to centerline? With this set-up, my insert will be pointing down, maybe 10 degrees. Assume I still put the point on the centerline but then insert will have a 10 deg downward rake? Is this a quirk of internal inserts My inserts for external threading are straight in.
