Drill Bits

   / Drill Bits #51  
Seriously, I suspect the clearance angle was ground in the wrong direction.

The-Check-of-Standard-Twist-Drill-Bit-after-Grinding-Eyeballing-lip-relief-angle-of-the-outer-ed.jpg
 
   / Drill Bits #54  
I was taught how to sharpen a drill bit on a grinder in High School Metal Shop. While I'm no expert, it's pretty simple to get a decent edge on a bit in less then a minute if it's just getting dull and needing a touch up.

My current grinder is a small, half horse power, cheapy that has one fine wheel and a course wheel. The support in front of the fine wheel has a groove in it that is perfect for drill bits.

I received a Drill Doctor as a give way back when they first came out and they had commercial on for them all the time. I was impressed with it at first, but didn't think it was faster then my grinder. Then after using it a few times, I wasn't able to get the same results I did when it was brand new, and then it sat on my shelf for a few more years until I threw it away. I forgot I even had it until it was mentioned on here. Do they still sell them?
 
   / Drill Bits #55  
A fine stone, good light and good eyes or glasses and a little knowledge is all that is needed I guess. Doesn't work, try again.
 
   / Drill Bits #56  
Like many others, a regular grindstone to sharpen drill bits by eye, but I use a diamond file to put a final edge on. I find it works well.
 

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