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Discussion Forum

Dull drill bits

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Wild Bill

02-17-1999 20:13:58




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Has anyone tried one of the electric, "pencil-sharpener" type drill bit sharpeners? Like the Drill Doctor? Are they any good? I sharpen them by eye on a bench grinder now, but I'm only fair at it.




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Don

03-08-1999 19:47:17




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 Re: Dull drill bits in reply to Wild Bill, 02-17-1999 20:13:58  
I've been sharpening drill bits for 25 years and the best sharpener I've used is a Black Diamond. This machine is extremly expensive and is not for the back yard machinist. I don't care for the plastic sharpeners as they wear out too fast. I would recommend purchasing a bench grinder that has a sharpener attachment. These are the most accurate for most applications. They use a "positive stop" that maintains symetrical flute lengths and angles. For those larger bits a beltsander works well.

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Joe in PA

02-18-1999 17:50:00




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 Re: Dull drill bits in reply to Wild Bill, 02-17-1999 20:13:58  
Don't know what those other fellows problem is. I think it is a great tool. Have had one for more than a year and very happy with the preformance.



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jack

02-18-1999 14:48:27




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 Re: Dull drill bits in reply to Wild Bill, 02-17-1999 20:13:58  

THE SECRET TO SHARPENING BITS IS TO TWIST AND DROP



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Bruce

02-19-1999 04:19:56




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 Re: Re: Dull drill bits in reply to jack, 02-18-1999 14:48:27  
What is "twist & drop?"
I'm sure it's takes a kind of touch, but can you explain more?



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jack

02-19-1999 14:09:52




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 Re: Re: Re: Dull drill bits in reply to Bruce, 02-19-1999 04:19:56  

you put the drill to the grinding stone and you start sharpening at the cutting edge, you twist the drill to sharpen it like everybody does but at the same time you twist the drill you also drop the shank or the hand that holds the drill slowly that gives you the clearance that yo need so the cutting edge doesn't drag on the metal but cuts it
i am not to good at explaining it but hopes it helps

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[email protected]

07-20-2001 02:32:57




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 Re: Re: Re: Re: Dull drill bits in reply to jack, 02-19-1999 14:09:52  
I have been looking for a web site on sharpening drill bits myself, I just don't have the nack! Was going to purchase a 750 Drill Doctor, are they as good as everybody says? I like the thoughts of been able to go all the way up to 3\4" and 2 different angles.
Thanks for any help I can get on this
Ernest Vioen



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jenny

06-13-2001 17:42:07




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 Re: Re: Re: Re: Dull drill bits in reply to jack, 02-19-1999 14:09:52  
I'm looking for a web site with an article about how to sharpen drill bits. Can anyone suggest a site?Thanks.



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Wild Bill

02-18-1999 19:47:58




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 Re: Re: Dull drill bits in reply to jack, 02-18-1999 14:48:27  
That's how Grandpa taught me, I can make them better than dull, but not as good as new. The bigger bits turn out pretty good, but not the little ones, maybe time for new glasses!



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john d.

02-18-1999 14:40:46




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 Re: Dull drill bits in reply to Wild Bill, 02-17-1999 20:13:58  
Don't know about those. In the shop here at school we have a Black & Decker #4300 Drill Bit Sharpener we bought several years ago. Kinda pricey, but puts the end of a drill in like-new condition if you follow the instructions.



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John in Pa.

02-18-1999 07:04:43




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 Re: Dull drill bits in reply to Wild Bill, 02-17-1999 20:13:58  
Well wild bill, looks like I'm by myself. Bought one of the 3/4" drill doctors last spring and it does a great job. Have to dull a bit a little just to drill brass! Guess I wasn't very good sharpening by eye before. Read about it for yourself at: Link



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len

02-18-1999 05:48:48




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 Re: Dull drill bits in reply to Wild Bill, 02-17-1999 20:13:58  

I have one. I don't use it to sharpen my bits. That tells you what I think of them.



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Paul Fox

02-18-1999 04:17:43




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 Re: Dull drill bits in reply to Wild Bill, 02-17-1999 20:13:58  
I've seen 'em, tried at a friends place. I wasn't particularly impressed. It's another one of them "one tool does it all" things that does a mediocre job.

My opinion: You'd be better to spend your money on a jig for your bench grinder that holds the drill at the proper angle.



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Jim

03-24-2002 15:46:48




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 Re: Re: Dull drill bits in reply to Paul Fox, 02-18-1999 04:17:43  
Looking for a jig for my bench grinder that holds the drill at the proper angle for sharpening. Sears has one in their catalog but I'd like to actually "see" one before I buy it. Any suggestions as to who might have one?



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Norm

02-18-1999 03:11:23




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 Re: Dull drill bits in reply to Wild Bill, 02-17-1999 20:13:58  
Wondered about these myself.



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