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Thread: I need a sticky thread!
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24th Feb 2021, 03:39 AM #1New Member
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I need a sticky thread!
Hi folks.
I'm working on a couple of machinist jacks which are pretty specific to a single job, but I may be able to use them again. They're only simple aluminium rod, threaded with a stainless bolt with the head pressed into another bit of aluminium rod. As I said these are for one specific job, they don't have to last.
The issue is, with all small jacks I guess, vibrations move the bolt and you lose your support.
So, what can you ladies and gents suggest for making my threads sticky? I don't want a lock tight, I need to be able to adjust them, but don't want them flopping around.
On a couple of smaller tests I've tried some thick way oil, basic grease, copper grease, all with varying degrees of failure. I have some no-slip-belt spray somewhere, but I can't find it, that was going to be my next trial.
Suggestions?
Many thanks.
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24th Feb 2021, 06:59 AM #2Philomath in training
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Try drilling a shallow hole in the thread, of a diameter to take a small piece of line trimmer cord (or 3D printer filament). Put a small piece of line in and that will provide friction to partly lock things up - bit like a nylock nut.
Michael
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24th Feb 2021, 07:52 AM #3Senior Member
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Room for a locking nut?
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24th Feb 2021, 07:54 AM #4Senior Member
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Could you use some thin knurled locking discs on the stainless thread?
Crocy.
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24th Feb 2021, 08:50 AM #5Mechanical Butcher
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I saw a grubscrew that had a shallow slot made along its length, with a plastic strip inserted.
Also, nylon patched fasteners seem to be getting popular.
https://www.ndindustries.com/product...king/nd-patch/
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24th Feb 2021, 09:45 AM #6Intermediate Member
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Can you incorporate a nyloc into your design?
Cheers Andrew
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24th Feb 2021, 10:37 AM #7Most Valued Member
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I know you said that you dont want to use loctite but i thought that i would mention loctite 222, its application is to retain adjustment screws from vibrating out of adjustment and it stays softish so that readjustment is not a problem. They say up to 1/4" but i am pretty sure it still works on larger bolts and might be an easy fix for your problem.
https://www.henkel-adhesives.com/au/...ctite_222.html
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24th Feb 2021, 11:17 AM #8China
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Could you slightly crimp the female thread section
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24th Feb 2021, 05:37 PM #9Most Valued Member
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A drop of superglue once in place. Bit of heat to break it when you’re done.
Thread sealing tape will also bind the threads in a non permanent manner
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24th Feb 2021, 07:30 PM #10Most Valued Member
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I'm not exactly clear what you are trying to do, but damping grease could be called sticky.
https://www.youtube.com/watch?v=59F9qUDNwnQ
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24th Feb 2021, 10:34 PM #11Most Valued Member
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Couple of ideas:
- roll an O-ring down the threads so it sits in the thread and up against the part it screws into
- a small cable tie tightened on the bolt thread/shank
- loctite pipe sealant or aviation gasket sealant (Permatex #3) are non-setting sealants that meet the "sticky" criteria
Steve
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25th Feb 2021, 08:23 AM #12Member: Blue and white apron brigade
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25th Feb 2021, 06:06 PM #13Tool addict
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I'm just going to parrot what racingtadpole suggested with using thread sealing tape, cheap to test, just possibly a real bugger to clean away at the end.
Could also try the thread sealing string I've seen on the shelf at the big green shed, never used it myself but I imagine it does a reasonable job of tightening up a thread.
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25th Feb 2021, 06:40 PM #14Philomath in training
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Here's one I prepared earlier (for those who could not understand what I was going on about)
IMG_0756.JPG
This is a 3D printed thread that I needed to keep a metal nut on firmly, without preventing rotation.
Michael
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