If the bolt head broke because of rust, etc., then heat may help break it loose while using an easy-out. In those cases, the threads are not locked/rusted/jammed and an easy-out works just fine. More often than not, a bolt breaks from over-tightening it, not from the actual removal process. Stop, wait, and go at it again in a couple minutes. If it smokes, you're overheating the bit. Nothing will prolong the life of a drill bit better than using *ANY* type of lubricant while drilling (anything is *way* better than nothing). Someone else mentioned it, but it bears repeating. Dewalt bits are not particularly "good" bits - Milwaukee bits are better. Having a brother who is a machinist helps a lot, as they have access to decent drill bits. Good drill bits are hard to find, if not impossible, at home improvement stores. They are very short and rigid which is what you want when starting adifficult hole.Īnd def center punch something like that to keep the bit from walking I have also started using center drills in my regular drill to start the hole. While you are at the store buy numerous smaller bits, I go through them constantly that way you don't have to halt progress for a store run. Hard to describe on my phone here, but basically use a bigger bit with a chisel point that will fit in the hole you just drilled. I was taught to start with a small bit and work up in size corresponding to the width of the split point. Pick up a can of rapid tap or similar at fastenal or grainger. Small bits like that are easily overheated especially if you didn't lube it. Regarding the bits, if you've been plowing away in any sort of bolt on a motorcycle for the time you stated, your bit is most likely been heated and effed to the point of no return. knowing more than likely stud will have to be drilled completely out to edge to threads. On frozen studs go easy when first trying ez out. then you have a bigger problem of having a hardened tool broken inside your bolt. likely end up with a broken ez out inside your bolt. then drilling a hole for an ez out will probably not work. Keep in mind if bolt was stuck hard enough to break off bolt head. if you keep drill bit centered, you can stop just when reaching threads. those almost always requires being drilled out to threads. Have used above technique successfully removing LOTS of broken bolts. then stud will collapse and come out.Īgain key to a successful outcome is to use sharp bits and drill your hole dead center. really stubborn studs need to be progressively drilled out until threads starts to show. Snap-on and Mac makes reverse drill bits too.īe sure to put lots of penetrating oil before trying to turn bolt. Start tilling drill bit towards center, keep working at until drill bit is centered.ĭon't drill straight down, until bit is perfectly centered.īest to start with a small bit, then go up as needed, until hole is big enough for an ez out. Slowly start hole and center it best you can. It's imperative to start hole in center to have a hope of good results.Ĭenter punch if possible, most times broken stud is too small. Preference is to use a veritable speed drill, so you can start the hole slowly. Key to drilling out broken studs/bolts is to start with a small SHARP bit.
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