Need a good high quality set of drill bits

[FordCummins]

Im looking for any suggestions on a good HIGH quality set of drill bits. Mainly for drilling out broken bolts and all the "tough" things. Price isnt too much of an object, as long as they are extremely sharp and durable. Thanks for any help.

 

[cojhl2]

I bought a set from Fastenal. They are straight shank.



Although I've not used them for the tough stuff for which you want them they seem to me to be very good.

 

[WCPoe]

Well I ended up with a set of Cobalt drills but I have to tell you that these tend to be almost too brittle when drilling broken bolts. They tend to chip the points when they grab into the really hard stuff. They are the best drilling bit set I have used for drilling most anything however.

That being said. ---

One method I use for drilling out broken off bolts has been the use of "left handed drill bits", they usually bite in and spin the remainder of the bolt out. I usually pick up a couple of sets at Harbor Freight to throw in the tool box.

Another technique is to use a oxy-acetylene touch with small tip and heat the broken bolt until near cherry red and touch a wax candle to it. The hot bolt instantly melts the wax and is drawn into the thread area where it seems to really loosen the bolt.

I never really had great luck with the "easy-out" left hand spiral twist tools. I also picked up a set of those nut-like extractors which could grab onto a protruding broken off bolt but haven't had the chance to try them out much.

Just my 2 cents.

Bill

 

[JDiepstra]

The last set of bits I got was DeWalt and they were crap.

 

[EWalshak]

Contact a tool supply company like Manhattan tool supply "MSC" or J&L. Tell them to send you a catalog. Go with"Cleveland Twist" brand or "OSG". The driils sold at home depot or lowes are not as high quality as these.

 

[FordCummins]

I ended up getting a set of the "Super Magnum" drill bits at Fastenal on Saturday (surprised they were open) because I needed to get a job done. They were reasonably cheap at $120 and seem to work very well so far. Drilling out broken bolts has to be one of the toughest things on these bits and so far they have held up well. Thanks for the suggestions.

 

[guldam]

Fuller American Drill Bits

Fuller American Made drill Bits.



GulDam