Metalworking (rec.crafts.metalworking) Discuss various aspects of working with metal, such as machining, welding, metal joining, screwing, casting, hardening/tempering, blacksmithing/forging, spinning and hammer work, sheet metal work.

 
 
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Wally Blackburn
 
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Default How to grind lathe bits on HF carbide tool grinder?

I'll admit it right off the bat - I'm not the sharpest tool in the
shed . I especially have trouble thinking in 3 dimensions. I'm the
type that has to turn the picture of the tool bit the same way as the
one I'm holding in order to get the angle right...

Anyway, I got one of the HF carbide tool grinders today (nice sale:
$129.95). I thought that the tilting tables and miter gage would make
it so simple that even I could do it. BZZZTT - Wrong!

Getting the end cutting edge and the end relief angle is pretty easy.
I tilt the table down at the angle I want the end relief angle to be
and set the miter gage to the desired end cutting edge angle and push
the front of the tool into the side of the wheel.

I can't figure out anything after that! It seems that I need to have
a slot for the miter gage that is perpendicular to the side of the
wheel (actually four of them). The only way I could figure to do the
side cutting edge angle was to use the miter gage and do it on the
outer edge of the wheel. Problem is, I'm hitting the wheel below the
center line and my side relief angle is wrong.

Hope I explained this in a way that is understandable. If anyone can
give me some pointers (pics would be great!), I would appreciate it.

Thanks,
Wallace
 
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