Removing drop-in bolts without power tools?
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Would like to remove these ugly sleeves so I can patch the holes cleanly, but I can’t figure out how to get these things out . Ive been hesitant to replace some of the old drop ins at my local crag because of the mess they leave behind but I would like to learn how in order to leave as little trace as possible .. |
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There are puller designs you can look up here and Supertopo that you could modify to pull it or you could just hammer set it recessed a bit and fill it with stick epoxy |
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It wouldn’t budge when I tried to hammer it in. And I do have patching epoxy (instaCrete) which works well but I don’t wanna patch it if it’s sticking out so much if I can help it |
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Hurleys are nice and work well. Most LCO (Local Climbing Organizations) have them. |
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Thanks folks |
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Redneck core drill: drill around it with a smaller bit to weaken it. Screw the hanger back on and funk it out. It'll be a bigger hole, but now you can patch it flush... |
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I've heard of pulling tools working nicely. |
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If you can get your hands on a Hurley Jr tool (there seems to be a bunch floating around nowadays) and a short bit of 3/8" rod (to connect the sleeve to the puller) it should be removable if the rock isn't too ridiculously hard. |
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I don't think what you have is a drop-in bolt. Here is a video on how to install a drop-in bolt so you might be able to reverse engineer a way to get it out. |
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Just out of curiosity, what kind of rock are you dealing with? |
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I think you’re right Bruce , it may actually be a self drive .thanks for those resources. |
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Might want to look at Gary Ballard’s removal method on pages 27-28 of the document linked below. No power tools required. To everyone saying “use a Hurley Jr”, that doesn’t work with drop-ins and self drills |
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Drew Nevius wrote:To everyone saying “use a Hurley Jr”, that doesn’t work with drop-ins and self drills I can assure you that it does. The CCC has removed a ton of drop-ins, using the very technique I mentioned, at Hidden Valley, VA. May not work in every rock type but it certainly works in some. |
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nbrown wrote: Interesting. I was attempting this in hard limestone. I could imagine that it would work more easily in softer stone. Were you drilling out the cone first, or just removing the bolt/hanger then using the Hurley with the draw stud? |
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Just remove the bolt and hanger, screw in the 3/8 rod (I just used one made from a sawed-off 3/8 wedge bolt), then yank. That rock is highly variable but much of it is hard sandstone. |
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It really will be helpful to distinguish between selfdrives and drop in. They a bit similar but very different. It the sleeve is sticking out like pictured it with most certainly be a hand drilled self drive. To use a Hurley or a much more powerful acme thread "do dad" you have to adapt to the thread of the self drive sleeve. They are typically 5/16", 8mm, 3/8, or 10mm. Penetrating oil is very helpful. I find the 8mm exasperating because some of them have very small diameter cones. That means you came only use a small diameter ball bearing |
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Timothy that’s helpful info, thank you. |