Metal/Drill bit question...

So... There is no way to turn carbide ? I have turned the shanks of many drills that I thought
was hard but this bit I needed to sharpen my cermets about 20 times to get this one job done.
It would only take a very small curl off no matter how hard I would push the cutter. I was using
a diamond stone to sharpen my cermets . A few time I could not get it to cut at all. I would resharpen
over and over until it would cut again. I tried different angles, speeds and feeds. Nothing seemed
to help. My carbide cutters would not touch it. If not carbide what might it be?
You were cutting HSS. The suggestion to grind 3 flats is a good one.
 
I would not use a twist drill that big for wood, a Forstner bit would do a better job, without binding up and tearing out.
Or re-grind to a brad point type drill. Think wood cutting auger bit.
Dave
 
A lesser quality bit would not have been that hard at the shank. I agree, you have a good one there.
I would not have spent the time. You have the patience of Job.
Nice work!
 
Thanks for all the reply's an help. The bit might not get used for wood but I
wanted a full set for in the wood shop... Thanks again...
 
Got some of those in at work ! :grin:
 
I bought a set of Rushmore 118 jobber size from McMaster last week. 1/8 to 1/2” in 64” increments.
They had TTC for about 30% less, I chose American made.
No more will I spend money on cheap drill bits.
 
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