Sharpening small carbide bits

[helterskelter]

Does anyone know how to sharpen small carbide bits? I use #50 (.070'' diameter) bits in a handheld application (has to be carbide, material too hard, nothing else cuts) and get a fair number of holes out of a single drill. But every so often I have a bad day and chip drill bits out left and right. I hate to toss these bits. Is there any repeatable method to put a point back on them? I tried by hand and just make them worse.

 

[5mall5nail5]

0.070" is quite small, but you might be able to sharpen on this:

http://garagejournal.com/forum/showthread.php?t=194323

If you have a broken one I could try and sharpen it on the tool and mail it back to you

 

[Hafen_Kafer]

You have to send them out. You will eat the diamond wheel of the Drill Doctor in no time.

 

[A_Pmech]

You'll need a micro drill pointer to sharpen those.

Something like a Meteor MM-10

 

[vintagefan]

There are companies that specialize in resharpening for the circuit board industry, I'd look into that.

In fact, some of them perform an "exchange program", you can buy little flats of carbide drills in a specific size, and then send them back once dull and get a new flat.

 

[EDGAR]

Check this link. They sell new bits as well as packs of resharpened micro drill bits.

http://drillcity.stores.yahoo.net/5pacresdrilb.html