What hardness [K,L,M] does everyone recommend for grinding drill bits and HHS lathe tools?
Thanks in advance.
Chuck P.
What hardness [K,L,M] does everyone recommend for grinding drill bits and HHS lathe tools?
Thanks in advance.
Chuck P.
I bought CBN wheels for my Darex sharpener from there guys, they work MUCH better than the wheels that came with it:
For offhand work I usually keep a 100 K white on the righ side for fine work and a 80 grit on the left.
A60 "Grade Q Structure M" has worked well for lathe bits and deburring on my bench grinder. I use a 7" angle grinder for heavier cuts.
jsw
H or J
This is an excellent tutorial including info on grinding wheel abrasives for shop use, and grinding HSS cutting tools, written by Harold V. The info can be found at The Home Machinist! - Chaski metalworking forum site.
"Grinding HSS tool bits"
Here's a site with a bonded grinding wheel chart.. You can probably save and copy the chart .gif then print it out for later reference.
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