|
|
Thread Tools | Display Modes |
#1
|
|||
|
|||
what is the blue/cyanic stuff sometimes found in bolt threads?
What is the blue/cyanic stuff sometimes found
in bolt threads? And how do you get it clean? I've found it is too deeply ingrained to do with a wire brush. I managed with a "hooked awl", but it was slow. Threading die perhaps or will that destroy the hole thing? Or some chemical yet again? -- underground experts united .... http://user.it.uu.se/~embe8573 Emacs Gnus Blogomatic ......... http://user.it.uu.se/~embe8573/blogomatic - so far: 56 Blogomatic articles - |
Ads |
#2
|
|||
|
|||
what is the blue/cyanic stuff sometimes found in bolt threads?
On Saturday, July 2, 2016 at 2:15:36 AM UTC-4, Emanuel Berg wrote:
What is the blue/cyanic stuff sometimes found in bolt threads? And how do you get it clean? I've found it is too deeply ingrained to do with a wire brush. I managed with a "hooked awl", but it was slow. Threading die perhaps or will that destroy the hole thing? Or some chemical yet again? -- underground experts united .... http://user.it.uu.se/~embe8573 Emacs Gnus Blogomatic ......... http://user.it.uu.se/~embe8573/blogomatic - so far: 56 Blogomatic articles - Sigh. It's threadlock to stop the bolt from coming loose. Cheers |
#3
|
|||
|
|||
what is the blue/cyanic stuff sometimes found in bolt threads?
Blue Loctite
http://www.lowes.com/pd/LOCTITE-Thre...tener/50083054 Sold by every auto parts store. And apparently the big hardware stores too.. Blue means its removable, you can unscrew the bolt with a wrench but the bolt will not unscrew by itself when in use. Red Loctite is permanent and you cannot remove the bolt. Most folks think Loctite is good in most situations. Most folks don't want to clean it off. I suppose alcohol or gasoline would remove it. On Saturday, July 2, 2016 at 1:15:36 AM UTC-5, Emanuel Berg wrote: What is the blue/cyanic stuff sometimes found in bolt threads? And how do you get it clean? I've found it is too deeply ingrained to do with a wire brush. I managed with a "hooked awl", but it was slow. Threading die perhaps or will that destroy the hole thing? Or some chemical yet again? -- underground experts united .... http://user.it.uu.se/~embe8573 Emacs Gnus Blogomatic ......... http://user.it.uu.se/~embe8573/blogomatic - so far: 56 Blogomatic articles - |
#4
|
|||
|
|||
what is the blue/cyanic stuff sometimes found in bolt threads?
For your reference, records indicate that
Emanuel Berg wrote: What is the blue/cyanic stuff sometimes found in bolt threads? Likely a thread locker, to keep things from wiggling loose. Different colors indicate different strengths. And how do you get it clean? It’s all basically a type of superglue, so anything that works to dissolve an acrylic. Nail polish remover is the common solution, I think. -- "Also . . . I can kill you with my brain." River Tam, Trash, Firefly |
#5
|
|||
|
|||
what is the blue/cyanic stuff sometimes found in bolt threads?
"
writes: Sold by every auto parts store. And apparently the big hardware stores too. Blue means its removable, you can unscrew the bolt with a wrench but the bolt will not unscrew by itself when in use. Red Loctite is permanent and you cannot remove the bolt. Most folks think Loctite is good in most situations. Most folks don't want to clean it off. Aha! So it still works even when it fills the thread gap because it is softer... It must be strong in some sense tho because often even for a long screw only three or four laps have it! Do you use it when you cannot have a stop nut on the other side? Or is it still beneficial? -- underground experts united .... http://user.it.uu.se/~embe8573 Emacs Gnus Blogomatic ......... http://user.it.uu.se/~embe8573/blogomatic - so far: 56 Blogomatic articles - |
#6
|
|||
|
|||
what is the blue/cyanic stuff sometimes found in bolt threads?
On Sat, 02 Jul 2016 08:15:33 +0200, Emanuel Berg
wrote: What is the blue/cyanic stuff sometimes found in bolt threads? Loctite Blue. And how do you get it clean? Superglue (cyanoacrylate) remover is currently based on nitromethane. Acetone works just as well, but evaporates rather quickly and is considered a safety hazard. Careful with both of these around your bicycle as both will attack most paints and soft rubber parts. I've found it is too deeply ingrained to do with a wire brush. I managed with a "hooked awl", but it was slow. Incidentally, if it's stuck, hit the screw head with a soldering iron, which should loosen the Loctite. Threading die perhaps or will that destroy the hole thing? That depends on the screw. There are all kinds of contraptions that will repair screw threads: http://www.nes.co.il/158905/ThreadMate https://www.youtube.com/watch?v=mrzFFgGw6k8 Much depends on the size of the screw. I think you'll find that you'll get better answers if you describe your problem in NUMBERS. Or some chemical yet again? Mechanical is easier. Put the screw into an electric drill chuck and scrape it clean with a wire brush as it rotates. -- Jeff Liebermann 150 Felker St #D http://www.LearnByDestroying.com Santa Cruz CA 95060 http://802.11junk.com Skype: JeffLiebermann AE6KS 831-336-2558 |
#7
|
|||
|
|||
what is the blue/cyanic stuff sometimes found in bolt threads?
On 7/2/2016 1:27 PM, Emanuel Berg wrote:
" writes: Sold by every auto parts store. And apparently the big hardware stores too. Blue means its removable, you can unscrew the bolt with a wrench but the bolt will not unscrew by itself when in use. Red Loctite is permanent and you cannot remove the bolt. Most folks think Loctite is good in most situations. Most folks don't want to clean it off. Aha! So it still works even when it fills the thread gap because it is softer... It must be strong in some sense tho because often even for a long screw only three or four laps have it! Do you use it when you cannot have a stop nut on the other side? Or is it still beneficial? It's always beneficial if the threaded fastener is subject to vibration. One technical detail: Anaerobic thread lockers (Loctite) and these thread lock patches don't work primarily by adhesive action. Their action is more dependent on the fact that they stop lateral wiggling of the fastener within the clearance between the male and female threads. There's almost always clearance between a male thread and a female one. If a fastener can vibrate or wiggle side to side within that clearance, it tends to lose preload very quickly. For an analogy, if you place (say) a book on a slightly slanted ramp, it will sit in place; but if you vibrate it or move it side to side, it will slide down the ramp a bit at a time. The screw thread is, functionally, a ramp on which the same action happens. Thread lockers take up that free space and prevent the lateral motion, so they prevent the screw from loosening. -- - Frank Krygowski |
#8
|
|||
|
|||
what is the blue/cyanic stuff sometimes found in bolt threads?
Frank Krygowski
writes: There's almost always clearance between a male thread and a female one. If a fastener can vibrate or wiggle side to side within that clearance, it tends to lose preload very quickly. For an analogy, if you place (say) a book on a slightly slanted ramp, it will sit in place; but if you vibrate it or move it side to side, it will slide down the ramp a bit at a time. The screw thread is, functionally, a ramp on which the same action happens. Thread lockers take up that free space and prevent the lateral motion, so they prevent the screw from loosening. Understood! Only: how do you know what parts are subject to vibration? If many parts are vibrating, which parts are safety-critical? The handlebar? You have a metaphor why star and split washers work as well? It consumes the vibration and balances it both ways so the result is no movement? Thanks to everyone else answering as well! -- underground experts united .... http://user.it.uu.se/~embe8573 Emacs Gnus Blogomatic ......... http://user.it.uu.se/~embe8573/blogomatic - so far: 56 Blogomatic articles - |
#9
|
|||
|
|||
what is the blue/cyanic stuff sometimes found in bolt threads?
On Sat, 2 Jul 2016 13:57:13 -0400, Frank Krygowski
wrote: Thread lockers take up that free space and prevent the lateral motion, so they prevent the screw from loosening. Thanks for the explanation. And now, a bit of major topic drift: I fix quite a few laptops, where the small M2, M2.5, and M3 screws holding the bottom of the case are secured with blue Loctite. I see fairly large numbers of missing screws. A typical laptop might have 12 small screws on the bottom, with 4-6 missing. Same problem with every brand. More use and vibration seems to make it worse. Even when I reassemble the laptop with additional blue Loctite, and make sure that the screws are snug, they fall out after a few months. Oddly, some of the screws require about 6 rotations to remove, which I find difficult to believe that they just "rattled" out. I couldn't find any pattern by location, type of screw, heads, depth, or screw finish quality. Got any theories? I'm out of bad guesses. We return you now to bicycling related topics... The Difference Between Red, Blue, Green and Purple Threadlockers http://www.us.henkel-adhesives-blog.com/post/All-About-Threadlockers/The-Difference-Between-Red-Blue-Green-and-Purple-Threadlockers/ Blue Threadlocker Basics http://www.us.henkel-adhesives-blog.com/post/All-About-Threadlockers/Blue-Threadlocker-Basics/ How to Remove Red Threadlocker http://www.us.henkel-adhesives-blog.com/post/All-About-Threadlockers/How-to-Remove-Red-Threadlocker/ -- Jeff Liebermann 150 Felker St #D http://www.LearnByDestroying.com Santa Cruz CA 95060 http://802.11junk.com Skype: JeffLiebermann AE6KS 831-336-2558 |
#10
|
|||
|
|||
what is the blue/cyanic stuff sometimes found in bolt threads?
On Sat, 2 Jul 2016 04:50:01 -0700 (PDT), "
wrote: Blue Loctite http://www.lowes.com/pd/LOCTITE-Thre...tener/50083054 snip. Red Loctite is permanent and you cannot remove the bolt. Most folks think Loctite is good in most situations. Most folks don't want to clean it off. I suppose alcohol or gasoline would remove it. Red Loctite will soften at higher temperature, a heat gun should do the trick. Loctite is availble for differnet metals, Red and Blue are for metals with iron in them. Henkel has more application information on their web site. Cheers |
Thread Tools | |
Display Modes | |
|
|
Similar Threads | ||||
Thread | Thread Starter | Forum | Replies | Last Post |
Converting Brake mounting bolt to recessed bolt? | Sir Ridesalot | Techniques | 18 | August 23rd 09 12:49 PM |
Invicta Men's Chronograph Blue Leather Blue Dial Watch 3314 | [email protected] | UK | 0 | April 3rd 08 04:17 AM |
Found - bike computer on the Oaks (Blue Mtns, NSW) | thefathippy | Australia | 8 | February 5th 07 11:30 PM |
Rolled vs. cut threads (was about brake bolt modification...) | jtaylor | Techniques | 6 | December 4th 05 01:54 PM |
Suffolk CTC Rough STuff 25 Ride - Lost & Found | Pete Whelan | UK | 1 | October 16th 05 04:04 PM |