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Locking two nuts on the end of a stud is a time-proven method of grabbing the end of a stud. Turn the lower nut counterclockwise, and the stud usually comes out. So why did I see slippage for ¼-20 studs? The answer and the solution took me some time to figure out. Fortunately, the fix was easy to implement.
If you are interested, please, click here
Your comments are welcome. All of us are smarter than any one of us.
Thanks,
Rick
The usable contact surface of an unmodified 1/4-20 nut is somewhere between .050 and .060/1.2-1.5mm according to the random ones laying around here. Not much at all, and unlikely to be precise enough to lock together smoothly. Probably even worse for smaller sizes. This is a good solution. Thank you.
"Sometimes an idea has to become more complex before it can become simpler."
"All of us are smarter than any one of us."
Rick, you should think seriously about collecting all these nuggets of wisdom into a little red book and selling it for a few bucks a copy.
It would be a very thin book!
I suggested that to him around a decade ago. Even volunteered to edit it, since I had a lot of free time on my hands then. He was too busy. ;)Quote:
Originally Posted by mklotz
And no, Rick, I don't think it would be all that thin! I've watched you do a lot of interesting things since I "met" you in the Yahoo groups.
Bill "in OKC"
That is very generous and kind of you.
Thanks,
Rick
I clicked the link expecting to see one of those carriage bolts make an appearance, and I was not disappointed.
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Thanks rgsparber! We've added your Stud Removal Method to our Fastening category,
as well as to your builder page: rgsparber's Homemade Tools. Your receipt:
<div id="blocks"> <div class="block b1 pngfix"> <div class="bimg"> <div> <a href="https://www.homemadetools.net/homemade-stud-removal-method"> <img src="/uploads/259721/homemade-stud-removal-method.jpeg"/> </a> </div> </div> <div class="head pngfix"></div> <div class="left pngfix"></div> <div class="right pngfix"></div> <div class="blockover b1 pngfix"> <div class="title"> <a href="https://www.homemadetools.net/homemade-stud-removal-method">Stud Removal Method</a> <span> by <a href="https://www.homemadetools.net/builder/rgsparber">rgsparber</a></span> </div> <div class="tags">tags: <a href='https://www.homemadetools.net/tag/disassembly'>disassembly</a> </div> </div> </div> </div>
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I'm betting a red-sleeved CD or red-paged PDF could do well.
Your post-bit says not so thin with 1,207 (currently) items and potential of 2599 willing customers. Simplest solution would be merely alphabetize them. That works in Excel, where a small picture of the result opens, when mouse hovers on the title.
rgsparber
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Regarding jam-nuts and studs, my preference leans to closed not open end wrenches. Not always possible.
I'll add one tip. Use a washer between them.
For stud removal, put wrench on first, then nut, then washer, other nut. The washer stabilizes wrench position whether winding fastener out or in, especially in areas where there's insufficient room to swing a full circle.
With 11 featured tips, rgsparber had the highest number of entries listed in our first tool tips ebook: 100 Tool Tips and Tricks I.
I have updated the article with the observation from ductape and ideas from Toolmaker51. Thanks!
Rick
Thank You, Rick.
I appreciate being cited in your paper.
The double nut and washer bit goes way back. That's how we pulled mold components; good sized stud (fine threads), nuts + washer, and a bridge straddling the part. In that use, a third nut and washer seated on the bridge work to pull core from position. Identical to automotive type screw operated pullers. They were mostly one-off tools stored under the job number.
Two quick thoughts after reading--
Thread lock between the nuts.
Inside star lock washer between the nuts.
Each probably has plusses and minuses in practice.
If you absolutely need to lock 2 nuts together for stud removal you can use what is called Nord-lock wedge washers. Simply place the 2 halves together between the buts then turn the bottom nut to remove the stud. for every other method even with the wedge washers it helps to hold a slight resistance on the top nut with a wrench I usually don't use anything between the nuts but have stacked 3 nuts together then with a wrench on the top and another on the bottom squeeze them like a plier while turning. The stud will either come out or twist off if you have enough grip
note, the only way to remove a nut with wedge washers under the nut will be to fuse the 2 halves together, otherwise there is a real risk of 1 stretching the bolt threads 2 twisting the bolt off, tack welding works best for me.
Happy to help. Investigating things like this can be very interesting.