04-17-2016, 11:55 AM
(04-17-2016, 10:30 AM)PixMan Wrote: aRM, if you do opt for the 25mm cutter and have a go at modifying the shank as I have done to six cutters (so far) be aware they're pretty hard. You would absolutely need to use good carbide tooling on the lathe. It's a tough application because you need a hard grade to get through the hardness of the tool shank, yet it has to be tough enough to endure the interrupted cut coming across the Weldon flats.
As for a center hole, it's not a traditional 60º one but you DO have a coolant hole that is centered quite exactly. Use that for support, but bring in your live center only after truing it up in the 4-jaw chuck using a dial test indicator on the ground shank to assure it's straight AND true the whole length of the ground shank.
Best of luck,
Ken
Hello KEN
Maybe we were a bit impetuous and a little naive in thinking that the Shank would not have been hardened but the Insert-holding section only !!!
Although we are pretty confident our lathe would be able to comfortably handle the interrupted Cuts - we just might need go back and research the Quality of the Inserts we have. However, they are definitely an Internationally recognised product. Not the run of the mill "Imports".
If push comes to shove, could we not just get "Ceramic" Inserts to properly complete the job ???
We do have another large truck Gudgeon Pin long waiting to be turned and adjusted as well. This project just might kill two birds !!!
aRM