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  #11  
Old 10-22-2019, 07:06 AM
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The video shows a bit being back cut that gives it a great cutting edge.
If you have a tendency to break the outer corners off the bit then after getting the cutting edge you want just roll the point of the bit down as you make the last swipe and it will leave more material behind the outer corners for strength.



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  #12  
Old 10-22-2019, 08:13 AM
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I've never had much luck trying to resharpen drill bits. They might do OK in soft wood, but wouldn't make a dent in steel. I just toss'em and go buy new ones. I bought a set of step bits from Harbor Freight, I'm impressed at how easily and fast they drill. Had never used that type before, I'm hooked now. Got a set of Bostitch twist bits if I need to go deeper than the step bits.
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  #13  
Old 10-22-2019, 06:15 PM
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Long ago I also learned to sharpen drill bits by hand, but increasingly shaky hands and poorer eyesight led me to buy a Drill Doctor. I have sharpened many bits with the DD and have been very pleased with it. With very small bits, 3/32 or so, it does not always align perfectly and the bit will not cut. But another try typically gets it right. The DD has always worked perfectly for me with 3/16 -- 1/2" bits.

Two spirals are nice!
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  #14  
Old 10-23-2019, 12:34 AM
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I will try that FBP. Thanks. C-Bob i am surprised that you had good results with the drill doctor. I did not get any improvement with the bits i tried to sharpen. So i will put on my reading glasses, find a strong light, have a couple of shots to steady my hands and wind up the grinder. Nothing to lose.
I love those step bits from HF too Bam. They drill very well for cheap.
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  #15  
Old 10-23-2019, 07:36 AM
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If you'll spend a little more money, the Dewalt Cobalt Pilot Point bits are awesome.
I bought a set and will not go back to the cheaper bits.
A set of 29 runs from $85 to $110 on dabay or Amazon.
Very little force to get them to cut.

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  #16  
Old 10-23-2019, 07:12 PM
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How do you sharpen those, OI?

Just kidding, moving along!

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  #17  
Old 10-23-2019, 08:58 PM
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99% of my drilling is with hand drills which wear out bits way faster than a press. I made the support structure for steering, pedals and gauges on the mono woody from 3x3x3/16" angle from a demo job years ago.
The pieces were used as door and window lintels and i didn't realize the metal is the poor grade recycle stuff like rebar is made from. Sometimes it drills easily and an inch over there may be some cast iron in the mix. Destroys new bits very quickly.
Hoping i can sharpen some of these old bits i was going to throw away well enough to get the last few holes i need.
When i do get new bits i will try those Dewalts on your recommendation OI.
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Last edited by earthman; 10-23-2019 at 10:11 PM.
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  #18  
Old 10-24-2019, 09:02 AM
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Quote:
Originally Posted by Dr Crankenstein View Post
How do you sharpen those, OI?

Just kidding, moving along!

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Quote:
Originally Posted by earthman View Post
When i do get new bits i will try those Dewalts on your recommendation OI.
LOL, Doc in a pinch I have sharpened a couple to get by till I could get a replacement. It can be done.

eman, you won't be disappointed. You know how your arm will start shaking when you're an arms length, above your head, from where you're drilling? These bits will eliminate almost all of that.
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  #19  
Old 10-24-2019, 07:33 PM
kenny c kenny c is offline
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I use the Dill Dr. I have the one that sharpens with a split point. I have decent results.
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  #20  
Old 10-25-2019, 10:35 AM
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I've resharpened bits but after a few holes they go dull again so I just keep new ones on hand!

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