THE TOOL SHED
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Thread: THE TOOL SHED

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  1. #1
    us
    nomad roman numeral 2

    Nov 2009
    nomads land
    any tector i can get my hands on
    2,046
    2140 times

    THE TOOL SHED

    perfect place for this question. who can tell me ? is cobalt harder than carbide ? then are drill bits just coated with these compounds or are the solid ? i'm frustrated as hell. i snapped a bolt off. been through about 25 drill bits. resharpend some. and still got nowhere. i was told i need a cobalt bit. bought a new one. didnt work any better than my old ones. so i took it back and when i got back there the guy that said thats what i need was gone already. so i got my money back and i'm still in limbo ? (*_*)

  2. #2
    us
    Jan 2017
    Western ny
    equinox 800, Whites mx sport, Garrot carrot, bounty hunter time ranger
    3,184
    4999 times
    All Types Of Treasure Hunting
    Quote Originally Posted by nomad 11 View Post
    perfect place for this question. who can tell me ? is cobalt harder than carbide ? then are drill bits just coated with these compounds or are the solid ? i'm frustrated as hell. i snapped a bolt off. been through about 25 drill bits. resharpend some. and still got nowhere. i was told i need a cobalt bit. bought a new one. didnt work any better than my old ones. so i took it back and when i got back there the guy that said thats what i need was gone already. so i got my money back and i'm still in limbo ? (*_*)
    I have had luck using diamond bits and a dremel with plenty of water so as not to ruin the bit. Cut a flat into it and use a flathead (sometimes with a pipe wrench or vise grips on it)to try and get it out. Sometimes all you need is an off set angled divot and a finish nail punch or center punch(something with a small sharp tip) then grab a hammer and hammer it to unscrew it out.

  3. #3
    us
    nomad roman numeral 2

    Nov 2009
    nomads land
    any tector i can get my hands on
    2,046
    2140 times
    no ! this wont work its more complicated. and i'm far more pissed off now !

  4. #4
    us
    Jan 2017
    Western ny
    equinox 800, Whites mx sport, Garrot carrot, bounty hunter time ranger
    3,184
    4999 times
    All Types Of Treasure Hunting
    Quote Originally Posted by nomad 11 View Post
    no ! this wont work its more complicated. and i'm far more pissed off now !
    show me some pics or something, I work on all sorts of crazy specialty equipment and have a bad habit of breaking bolts..... Chances are I can come up with a solution.

  5. #5
    us
    Deep1

    Dec 2018
    Carolina Lowcountry
    Nox 800, Garrett Sea Hunter Mark II, Poor ole wore out Fisher 1266 that still finds stuff.
    249
    556 times
    All Types Of Treasure Hunting
    For bolt extraction, you need to use left hand drill bits.
    Use a punch to dimple center of bolt.
    Start the hole with a small bit, 1/8 or smaller, once you have small hole you can progress using larger bits until you get hole size you want.

    Here's an extractor set with cobalt bits:

    https://www.amazon.com/Irwin-Industr...%2C202&sr=8-50
    If it's old, I'll dig it, dive on it, detect it or sometimes when I get lucky just bend over and pick it up.

    "Nothing in life is so exhilarating as to be shot at without result" Winston Churchill

 

 

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