How To Use Bolt To Download ((LINK)) Youtube Videos
Jeri Findley
I cut some excess tubing to be the width of the bracket and marked two hole locations with a Sharpie pen. I drilled all the way through the tubing, but you could use shorter screws with the screw heads inside the tube (would be a pain to tighten them, tho). An alternative is to cut a wooden handle about the dimensions of a hammer handle but with a rectangular end and use all 4 bolt holes to attach it to the bracket.
[9/30/2018 update:] Geir Hundal has come up with a different method that can work some of the time- If you have a draw stud that is 5/16" along its entire length, you simply remove the center bolt and screw the draw stud in instead. Keep turning until you can tell you are rotating the cone because you have engaged all the threads. Start pulling - if the cone and sleeve are a little bit rusty, the cone will push the sleeve out ahead of it rather than cleanly re-insert itself (if the hanger were in place, the sleeve would be sandwiched between the cone and bolt head, but with nothing but air outside the hole, there is room for the sleeve to slide out.) This method is more likely to work on slightly rusty bolts than on new ones.
5-piece bolts usually require these steps - After unscrewing the center bolt, use a 3/8-16 tap to cut threads on the inside of the sleeve. Disengage the cone by re-inserting the original bolt, screwing it in two or three turns, then hitting the bolt head with a hammer to move the cone to the back of the hole and out of the sleeve. Unscrew the original bolt, then screw in a 3/8-16 draw stud to connect it to the new threads you just cut in the sleeve. Attach the puller and see if you can get it to budge. If it moves at all, back off on the tension and attempt to screw the stud in deeper before continuing. Repeat that process several times. If/when the sleeve rips apart, go back to tapping new threads.
You can get a working draw stud for 3/8" bolts at O'Reilly Auto Parts for $1.69 (I called Advance and AutoZone and NAPA, but they don't stock this part). Or search the internet for 'Dorman 675-006' and purchase something that looks like this:
Although it has a zinc finish it is Grade 8. This unmodified stud will not help you get the cone part out, but you could use the original bolt and hanger and a funkness device instead. The ideal draw stud would also have a 5/16 reduction at the working end to screw into the cone. This modification will take you less than 5 minutes:
You will need a tap wrench and a tap to cut threads on the inside of the sleeve. For 3/8" bolts, use a 3/8-16 tap with a heavy duty spiral, 7/16-20 for 1/2" sleeves. They look like this:
Greg - thanks so much for all of your hard work on the design and documentation of this tool! The detailed parts lists and sources are a huge help! I'm looking forward to putting one together later this spring to get to some rebolting projects for the summer!
This is what I would call doodad 1.5 maybe? I brought one of my doodad version1 s to spain with me a few years ago, it ended up being used as a template for this one in the video that was created by a local ferrer (machinist) in mallorca to be used by the rebolting community on the island. They hold regular workshops on sustainable bolting, which to them means using titanium glue ins, and one guy (Jozua, minute 3 of the video) is really pushing the community to embrace the idea of removing the old bolts and reusing the holes if possible.
One thing to keep in mind for you people looking to remove bolts from limestone.. In mallorca we have found the spinner to be the most important part of removing bolts. Especially with old rusty galvanized bolts, the spinner is the only thing that is needed, the rust will spin off and the bolt usually just slips right out. I would say that the doodad is only needed in the most rare cases (in limestone), and in fact is a detriment to the goal of removing the bolt. I think it is because the spinning action causes the collar to wear on the limestone, instead of on the shaft of the wedge bolt. So the groove in the shaft never forms no matter how long you spin, and then the collar doesn't catch when you pull, and then the bolt breaks (this actually happens in the video). If you're lucky, the collar is so rusty that it just .. sublimes? after a few seconds of spinning and the bolt slips right out. If you're unlucky, the collar stays in tact and wears down the limestone during the spin cycle all the way from the back of the hole to the front, until the whole thing comes out and the hole ends up just a little bit wider. It uses a lot of battery (they talk about this in the video), but nobody said sustainable bolting was cheap, or easy, right?
Yep, most 5 piece bolts that need to be replaced are 3/8"ers since that was the standard bolt 20 years ago, at this point in time it is pretty rare to find a 1/2" 5 piece that needs to be replaced (at least in dry areas).
Ken-
The doodad just rotates and uses mechanical threads to transfer rotational motion into motion along the length of the bolt. Since a drill also turns things it seems reasonable that it might be able to replace the doodad. Though there are many reasons that it might not work.
Why not just apply the spinner tool directly to the stud using high nut, a deep socket, and a simple thrust bearing, with maybe a spacer if the socket isn't deep enough? Just like when you tighten the bolt down for the first time and the threads pull out.
Ryan-
Your response isn't very useful as is.
Gregger's doodad, which is awesome, looks like it is about a foot long. How much force do you think can be applied to that handle by someone hanging from a rope? Say 300 lbs? So, 300 foot lbs of torque?
I might give it a shot. I place wedge bolts because they are a lot cheaper than sleeve bolts. A friend I respect doesn't think very highly of placing wedge bolts. I figure if I pull a couple of them then I could assuage any concerns I have about placing them or decide that it is worth the extra money for sleeve bolts.
I struggle to find time to get all of the things done that I want to do. Gregger's doodad looks sweet, but putting it all together is time that I can't spend doing something else. I'm more likely to try something that doesn't require as much time. The best solution would be to borrow one.