Maybe it was a waste, but it was only $50 and I enjoy doing things right.
Should the diamond grinding wheel or the bit being sharpened be wet with some liquid like silicon or WD-40?
I also made a channel to help cut my aluminum flat bar forks. Haven't used it yet, but it will help do it right.
It is not diamond, it is CBN.
i
i run my Darex drill sharpener dry
I don't know if you can even use coolant with a Drill Doctor, but with a CBN wheel, don't use coolant with a rust inhibitor in it. The chemistry isn't compatible. (Something I learned by interviewing wheel manufacturers a decade ago.)
Ordinary soluble oils are recommended in production and toolroom applications.
Don't lube the drill doctor.
It is best not to practice to many times with expensive stuff :-)
Mart> Maybe it was a waste, but it was only $50 and I enjoy doing things > right.
A bit after sharpening.
That conical shape won't work very well, but they have another cut that will.
I've recovered a broken 3/4" drill I got for free. I first turned it like that and then cut the cross point. Another one, I corrected to that form and then hand ground the flats on it.
What is the other - cross point ? something like that.
Mart>
They are the same 1/2 inch drill bit, with different lighting Number 2 is after another grinding.
I might try sanding the cutting edge with a rotary tool. That would be my first use of a rotary tool sanding paper disk.
Have something to add? Share your thoughts — no account required.
Ask the community — no account required