07-17-2019, 11:01 PM
I need to educate myself regarding tool bit grinding and the profiles. Finding the HHS tool blanks 1/2 x 8 extremely reasonable. Burning up a few will not be all that costly. Plus 8in blanks allow a few regrinds.
Notice they are sold with a 15* rake. What is the purpose of that, understand it chip wise. But why would they put the relief in the blank, seems the user can knock that out. Could it be a user quick start tool grind prep?
Looking forward to getting into the HSS tooling. Next acquire the HF chain saw sharpener and adapt a green wheel for grinding ..... Dam will end up with 4 bench grinders when this is over, 2 stone & wire wheel, tungsten and green wheel lathe tool grinder.
I have some bonded carbide HF tool bits, that kindly Jack sent to me. Saw where grinding the tool a tad back clearing tool material so as the tip hangs out a bit more, helps. So tried it and it does not to shabby.
Last but not least I was turning using what I have. My lathe has variable speed control. While turning I started to adjust the speed on the fly, added more control of the finish. Kind of like a ruff cut, dialing in the speed and run with it.
No I will never be grinding end mills, not interested, worth the $$$ to farm those out.
Cheers,
Pep
Notice they are sold with a 15* rake. What is the purpose of that, understand it chip wise. But why would they put the relief in the blank, seems the user can knock that out. Could it be a user quick start tool grind prep?
Looking forward to getting into the HSS tooling. Next acquire the HF chain saw sharpener and adapt a green wheel for grinding ..... Dam will end up with 4 bench grinders when this is over, 2 stone & wire wheel, tungsten and green wheel lathe tool grinder.
I have some bonded carbide HF tool bits, that kindly Jack sent to me. Saw where grinding the tool a tad back clearing tool material so as the tip hangs out a bit more, helps. So tried it and it does not to shabby.
Last but not least I was turning using what I have. My lathe has variable speed control. While turning I started to adjust the speed on the fly, added more control of the finish. Kind of like a ruff cut, dialing in the speed and run with it.
No I will never be grinding end mills, not interested, worth the $$$ to farm those out.
Cheers,
Pep
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