Drill Bit Sharpener

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I have the DD 750x and while it will sharpen twist, split point, 118* and 135* bits, it won't sharpen brad and pilot point bits. Because I don't have any of those it's not an issue for me. The DD works great at sharpening the above bits.

Joe
 
I strongly reccomend the DD750 or equivalent.There ahs been a few threads about this.
There was a current one but a search in the archives should bring up more.
 
Do I understand this right, With the DD-750, can I grind the brad point off a brad point bit and turn it into a regular point bit? If this is true, won't all that grinding alter the hardness?
 
Originally posted by Jamie
<br />Do I understand this right, With the DD-750, can I grind the brad point off a brad point bit and turn it into a regular point bit? If this is true, won't all that grinding alter the hardness?
Click to expand...

James,

The few brad point drills that I have I use until they get dull. Then, I convert them to 135 degree split points with my DD750. So far, I have not noticed any problems. I don't think that there is a commercially available tool to resharpen brad point drills, but I can't swear to it. BTW, definitely get the DD750 as it will handle any drill size that we use.

FWIW,
 
Originally posted by Jamie
<br />Do I understand this right, With the DD-750, can I grind the brad point off a brad point bit and turn it into a regular point bit? If this is true, won't all that grinding alter the hardness?
Click to expand...

Yes to first question.

And no to the second, given that you take the standard precautions about not overheating the drill bits.

And a final tip....grind down the bullet points and brad points to the approximate 135° twist configuration on your bench grinder and then do the final sharpening on the DD. The stones for the DD are relatively expensive and there is no need to wear them out prematurely with a lot of rough grinding.
 
If you use the above method as seuggested, dip it in a little oil to keep it cool while at the bench grinder or you will have "blue bits"
 
Originally posted by ctEaglesc
<br />If you use the above method as seuggested, dip it in a little oil to keep it cool while at the bench grinder or you will have "blue bits"
Click to expand...
Is that anything like blue b...ooopppsss! Almost forgot that this is a "G" rated site. [:D]
 
Jamie,
I am very new to this fantastic site, but I have been in the engineering game for years. My honest opinion is DON'T buy a machine designed to sharpen your drill bits. Learn how to sharpen them on a grinding machine. Unfortunatley this is a dying art, which is sad because the results are really often better than those from an affordable dedicated machine. Fortunatley for me, I had a great foreman during my apprenticeship and he took a box of about 100 bit of different sizes, ground them flat and told me to get on with it!!
The result was that 25 plus years later, if I'm really stuck, I could probably sharpen a broken bit with a brick. With practice, there is not a drill bit made that you can't sharpen. There are also dozens of ways to sharpen each type of bit for a particular material. There are many sites on the web that even have video tutorials of how to sharpen bits.
It's like riding a bike, you will never forget!!
 
Great idea, Skiprat. Now then, about how to turn without electricity. I have seen some lathes turned with a foot treadle, and that would help avoid dependance on electricity. [:D][}:)][:D]
 
Ok Billy Boy, I get your point and this is the 21st century after all.[:)]
The ability to sharpen drill bits is a skill like sharpening your turning tools, and of course like turning pens.
There are recents pics of ribbons flying off a pen in a lathe. This is really satisfying when you sharpened the tool yourself. Ditto for drill bits. When those twin ribbons curl out of the hole.....

Cor Blimey, does it for me!!
Cheers Buddy
 
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