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Electronics Repair (sci.electronics.repair) Discussion of repairing electronic equipment. Topics include requests for assistance, where to obtain servicing information and parts, techniques for diagnosis and repair, and annecdotes about success, failures and problems. |
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#1
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![]() WD-40 to clean electric contacts? I'm on vacation and renting a room, and my landlady has a combination CD/Radio/Cassette?, very compact, portable, works well except fo the little on/off/CD slide switch. The switch doesn't easily make contact, even when pushed to and past the On position. So it's hard to get the radio on, and it turns off by itself in about 30 minutes. Moving the switch back and forth 10 times to clean it hasn't worked yet. Normally what I would do is spray contact cleaner or tuner cleaner in the switch from above, where the plastic slider that goes over the switch is, And normally that doesn't accomplish much. Even taking such things apart and spraying the switch from underneath has taken longer to work than for rheostats, for example, and here I don't want to take it apart. She's only my landlady. I don't know where in this non-English-speaking country to buy contact cleaner and she might balk at the extra money, but she does have something in an aerosol can that looks mighty like WD-40. I have this vague recollection that WD-40 is good to clean electric contacts?? Either that or it's bad for them. Should I try it. BTW, I want to use the radio, so that's one big reason I want it fixed. When it stopped playing while she was there, she said, "Oh, yeah, maybe that's why I bought another one" (She speaks English.) |
#2
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On 01.05.17 18:07, Micky wrote:
WD-40 to clean electric contacts? I'm on vacation and renting a room, and my landlady has a combination CD/Radio/Cassette?, very compact, portable, works well except fo the little on/off/CD slide switch. The switch doesn't easily make contact, even when pushed to and past the On position. So it's hard to get the radio on, and it turns off by itself in about 30 minutes. Moving the switch back and forth 10 times to clean it hasn't worked yet. Normally what I would do is spray contact cleaner or tuner cleaner in the switch from above, where the plastic slider that goes over the switch is, And normally that doesn't accomplish much. Even taking such things apart and spraying the switch from underneath has taken longer to work than for rheostats, for example, and here I don't want to take it apart. She's only my landlady. I don't know where in this non-English-speaking country to buy contact cleaner and she might balk at the extra money, but she does have something in an aerosol can that looks mighty like WD-40. I have this vague recollection that WD-40 is good to clean electric contacts?? Either that or it's bad for them. Should I try it. BTW, I want to use the radio, so that's one big reason I want it fixed. When it stopped playing while she was there, she said, "Oh, yeah, maybe that's why I bought another one" (She speaks English.) Trying it, will certainly not make things worse. And cleaning/flooding the switch a day or two later with something volatile,(alcohol,turpentine or such) will take care of the wd40 residue(maybe). I don't think it will make things worse. |
#3
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On 5/1/17 12:07 PM, Micky wrote:
WD-40 to clean electric contacts? I'm on vacation and renting a room, and my landlady has a combination CD/Radio/Cassette?, very compact, portable, works well except fo the little on/off/CD slide switch. The switch doesn't easily make contact, even when pushed to and past the On position. So it's hard to get the radio on, and it turns off by itself in about 30 minutes. Moving the switch back and forth 10 times to clean it hasn't worked yet. Normally what I would do is spray contact cleaner or tuner cleaner in the switch from above, where the plastic slider that goes over the switch is, And normally that doesn't accomplish much. Even taking such things apart and spraying the switch from underneath has taken longer to work than for rheostats, for example, and here I don't want to take it apart. She's only my landlady. I don't know where in this non-English-speaking country to buy contact cleaner and she might balk at the extra money, but she does have something in an aerosol can that looks mighty like WD-40. I have this vague recollection that WD-40 is good to clean electric contacts?? Either that or it's bad for them. Should I try it. BTW, I want to use the radio, so that's one big reason I want it fixed. When it stopped playing while she was there, she said, "Oh, yeah, maybe that's why I bought another one" (She speaks English.) According to WD-40's "List of 2000+ Uses" at https://wd40.com/files/pdf/wd_40_200...d_jan_2017.pdf "• Cleans gunk from electrical contacts" is one of them |
#4
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A few things on WD-40.
Its name means Water Displacement - 40th try. It is, essentially, stoddard solvent, that is highly refined kerosene and a very small amount of very light mineral oil. It is 100% volatile over time. Which is directly related to temperature. Most gunks and goos are soluble in WD-40. But, what is not rinsed away will be evenly distributed when the solvent evaporates. So beware! It is a rather gentle solvent, and does not attack most plastics or finishes. *MOST*, not all! WD-40 is NOT a contact cleaner. What it does along those lines is by rinsing. WD-40 is not a lubricant. It will (temporarily) reconstitute some lubricants under some conditions. Good luck with it, you could do worse. |
#5
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On 5/1/2017 12:00 PM, Retired wrote:
According to WD-40's "List of 2000+ Uses" at https://wd40.com/files/pdf/wd_40_200...d_jan_2017.pdf "• Cleans gunk from electrical contacts" is one of them And most of the 2000 ideas are marketing hype. -- Jeff-1.0 wa6fwi http://www.foxsmercantile.com --- This email has been checked for viruses by AVG. http://www.avg.com |
#6
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On Monday, 1 May 2017 18:40:38 UTC+1, wrote:
A few things on WD-40. Its name means Water Displacement - 40th try. It is, essentially, stoddard solvent, that is highly refined kerosene and a very small amount of very light mineral oil. It is 100% volatile over time. Which is directly related to temperature. Most gunks and goos are soluble in WD-40. But, what is not rinsed away will be evenly distributed when the solvent evaporates. So beware! It is a rather gentle solvent, and does not attack most plastics or finishes. *MOST*, not all! WD-40 is NOT a contact cleaner. What it does along those lines is by rinsing. WD-40 is not a lubricant. It will (temporarily) reconstitute some lubricants under some conditions. Good luck with it, you could do worse. Stoddard solvent is aka white spirit. I'd try 100 times rather than 10. NT |
#7
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On 5/1/17 3:08 PM, Foxs Mercantile wrote:
On 5/1/2017 12:00 PM, Retired wrote: According to WD-40's "List of 2000+ Uses" at https://wd40.com/files/pdf/wd_40_200...d_jan_2017.pdf "• Cleans gunk from electrical contacts" is one of them And most of the 2000 ideas are marketing hype. You're a regular party-pooper! -- If people, who cross our border illegally are not Illegal— then what are they? - @chuckwoolery |
#8
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On Mon, 01 May 2017 19:07:44 +0300
Micky wrote: WD-40 to clean electric contacts? I'm on vacation and renting a room, and my landlady has a combination CD/Radio/Cassette?, very compact, portable, works well except fo the little on/off/CD slide switch. The switch doesn't easily make contact, even when pushed to and past the On position. So it's hard to get the radio on, and it turns off by itself in about 30 minutes. Moving the switch back and forth 10 times to clean it hasn't worked yet. Normally what I would do is spray contact cleaner or tuner cleaner in the switch from above, where the plastic slider that goes over the switch is, And normally that doesn't accomplish much. Even taking such things apart and spraying the switch from underneath has taken longer to work than for rheostats, for example, and here I don't want to take it apart. She's only my landlady. I don't know where in this non-English-speaking country to buy contact cleaner and she might balk at the extra money, but she does have something in an aerosol can that looks mighty like WD-40. I have this vague recollection that WD-40 is good to clean electric contacts?? Either that or it's bad for them. Should I try it. BTW, I want to use the radio, so that's one big reason I want it fixed. When it stopped playing while she was there, she said, "Oh, yeah, maybe that's why I bought another one" (She speaks English.) Report back the results after you man up and try it. |
#9
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On Mon, 01 May 2017 19:07:44 +0300, Micky wrote:
I don't know where in this non-English-speaking country to buy contact cleaner and she might balk at the extra money, but she does have something in an aerosol can that looks mighty like WD-40. Get it on Ebay and have it shipped to you. |
#10
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In message ,
" writes A few things on WD-40. Its name means Water Displacement - 40th try. It is, essentially, stoddard solvent, that is highly refined kerosene and a very small amount of very light mineral oil. It is 100% volatile over time. Which is directly related to temperature. Most gunks and goos are soluble in WD-40. But, what is not rinsed away will be evenly distributed when the solvent evaporates. So beware! It is a rather gentle solvent, and does not attack most plastics or finishes. *MOST*, not all! WD-40 is NOT a contact cleaner. What it does along those lines is by rinsing. WD-40 is not a lubricant. It will (temporarily) reconstitute some lubricants under some conditions. The makers of WD40 might disagree with you. Good luck with it, you could do worse. Indeed. WE40 may be the perfect cure for every problem - but it IS a good general-purpose cleaner/lubricant/anti-corrosion fluid. I've never had any problems with it. -- ian |
#11
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On Mon, 1 May 2017 10:40:36 -0700 (PDT), "
wrote: A few things on WD-40. Its name means Water Displacement - 40th try. It is, essentially, stoddard solvent, that is highly refined kerosene and a very small amount of very light mineral oil. It is 100% volatile over time. Which is directly related to temperature. Most gunks and goos are soluble in WD-40. But, what is not rinsed away will be evenly distributed when the solvent evaporates. So beware! It is a rather gentle solvent, and does not attack most plastics or finishes. *MOST*, not all! WD-40 is NOT a contact cleaner. What it does along those lines is by rinsing. WD-40 is not a lubricant. It will (temporarily) reconstitute some lubricants under some conditions. Good luck with it, you could do worse. WD-40 does not completely evaporate over time unless the temperature is higher than that which is compatible with human life. It leaves a kind of hard residue, almost like a very hard wax. A very thin coating. Which, unless baked on, will be easily dissloved when next doused with WD-40. I have had direct experience with this coating. It can be used to repaior an oil-rubbed bronze finish. Eric |
#12
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On Monday, May 1, 2017 at 5:51:19 PM UTC-4, wrote:
WD-40 does not completely evaporate over time unless the temperature is higher than that which is compatible with human life. No, it does completely evaporate. That 'leftover' is the previous skunge dissolved and spread over everything. To prove this out: Take a standard paper towel, clean and dry. Saturate it in WD-40. Leave it on a clean surface in a location in your domicile exposed to normal temperature variations. Check it in 4-20 days depending on ambient temperatures. Don't take my word for it. Peter Wieck Melrose Park, PA |
#13
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On 2017/05/01 1:24 PM, Wade Garrett wrote:
On 5/1/17 3:08 PM, Foxs Mercantile wrote: On 5/1/2017 12:00 PM, Retired wrote: According to WD-40's "List of 2000+ Uses" at https://wd40.com/files/pdf/wd_40_200...d_jan_2017.pdf "€˘ Cleans gunk from electrical contacts" is one of them And most of the 2000 ideas are marketing hype. You're a regular party-pooper! Having cleaned the residue (glue like substance) of WD-40 from many an electrical unit I would say that it's only practical use is for preventing rust on tools. Everything else is hype. There are FAR better solvents out there than WD-40...and cheaper! John :-#(# -- (Please post followups or tech inquiries to the USENET newsgroup) John's Jukes Ltd. 2343 Main St., Vancouver, BC, Canada V5T 3C9 (604)872-5757 or Fax 872-2010 (Pinballs, Jukes, Video Games) www.flippers.com "Old pinballers never die, they just flip out." |
#15
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On Mon, 1 May 2017 22:48:40 +0100, Ian Jackson
wrote: In message , " writes A few things on WD-40. Its name means Water Displacement - 40th try. It is, essentially, stoddard solvent, that is highly refined kerosene and a very small amount of very light mineral oil. It is 100% volatile over time. Which is directly related to temperature. Most gunks and goos are soluble in WD-40. But, what is not rinsed away will be evenly distributed when the solvent evaporates. So beware! It is a rather gentle solvent, and does not attack most plastics or finishes. *MOST*, not all! WD-40 is NOT a contact cleaner. What it does along those lines is by rinsing. WD-40 is not a lubricant. It will (temporarily) reconstitute some lubricants under some conditions. The makers of WD40 might disagree with you. Good luck with it, you could do worse. Indeed. WE40 may be the perfect cure for every problem - but it IS a good general-purpose cleaner/lubricant/anti-corrosion fluid. I've never had any problems with it. I've never had any problems with it either, but there are tw othings ti does not do well. 1. Loosen rusted bolts. (I use PB Blaster for that, it's a much better product). 2. Be used as a permanent lubricant. For example, if the tailgate on my pickup is sticking, I will use WD 40 to loosen that linkage, but once the linkage is loose, I apply an oil or grease to that linkage for a permanent lube. I dont think the WD 40 totally evaporates, but there is little lube left. Thus I apply the oil or whatever as a permanent lube for that linkage. I have never used WD 40 for electronic switch contacts or potentiometers. I always used contact cleaner. But I have used WD 40 on auto connectors such as trailer light plugs, with corrosion on them. It helps clean them, but I always clean them as best as possible too. Overall, its top promotion seems to be to loosen rusted bolts, and I find it near worthless for that purpose. But it does have some other uses which are valuable. It's also works rather well to clean off oxidation on old dull paint (on cars and other metal objects). There are other generic replacements for WD 40 that are cheaper and work just as well. I usually buy them. |
#16
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![]() Micky wrote: I have this vague recollection that WD-40 is good to clean electric contacts?? Either that or it's bad for them. ** WD40 is excellent at making bad contacts good again. Switches, connectors and pots are all examples. ..... Phil |
#17
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Sjouke Burry wrote:
Trying it, will certainly not make things worse. And cleaning/flooding the switch a day or two later with something volatile,(alcohol,turpentine or such) will take care of the wd40 residue(maybe). ** No need to do that, the reside is just light mineral oil. ..... Phil I don't think it will make things worse. |
#18
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wrote:
A few things on WD-40. ** So a few lies from this norotious WD-40 hater. It is, essentially, stoddard solvent, that is highly refined kerosene and a very small amount of very light mineral oil. ** WD-40 contains no kerosene and the oil content is 10-15 %. It is 100% volatile over time. Which is directly related to temperature. ** At room temp, that could means years. WD-40 is NOT a contact cleaner. What it does along those lines is by rinsing. ** So the same action as other contact cleaners. WD-40 is not a lubricant. ** Of course it is. ...... Phil |
#19
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wrote:
Stoddard solvent is aka white spirit. ** Which is refined petrol, aka lighter fluid. ...... Phil |
#20
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wrote:
WD-40 does not completely evaporate over time unless the temperature is higher than that which is compatible with human life. It leaves a kind of hard residue, almost like a very hard wax. A very thin coating. Which, unless baked on, will be easily dissloved when next doused with WD-40. I have had direct experience with this coating. ** Ever burn some oil in a fry pan ? If you put WD-40 on parts that get hot, a similar residue forms. It cleans off easily or dissolves in fresh WD-40 so is not a problem. I see it on the pins of certain noval tubes from time to time. ..... Phil |
#21
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On 5/1/2017 12:39 PM, Sjouke Burry wrote:
On 01.05.17 18:07, Micky wrote: WD-40 to clean electric contacts? I'm on vacation and renting a room, and my landlady has a combination CD/Radio/Cassette?, very compact, portable, works well except fo the little on/off/CD slide switch. The switch doesn't easily make contact, even when pushed to and past the On position. So it's hard to get the radio on, and it turns off by itself in about 30 minutes. Moving the switch back and forth 10 times to clean it hasn't worked yet. Normally what I would do is spray contact cleaner or tuner cleaner in the switch from above, where the plastic slider that goes over the switch is, And normally that doesn't accomplish much. Even taking such things apart and spraying the switch from underneath has taken longer to work than for rheostats, for example, and here I don't want to take it apart. She's only my landlady. I don't know where in this non-English-speaking country to buy contact cleaner and she might balk at the extra money, but she does have something in an aerosol can that looks mighty like WD-40. I have this vague recollection that WD-40 is good to clean electric contacts?? Either that or it's bad for them. Should I try it. BTW, I want to use the radio, so that's one big reason I want it fixed. When it stopped playing while she was there, she said, "Oh, yeah, maybe that's why I bought another one" (She speaks English.) Trying it, will certainly not make things worse. And cleaning/flooding the switch a day or two later with something volatile,(alcohol,turpentine or such) will take care of the wd40 residue(maybe). I don't think it will make things worse. Very bad idea. Contact cleaner is specifically formulated for the job and won't cause any harm to electronics. A friend used WD40 on some very expensive chemical instrumentation as "preventive maintenance" and the volatile solvents in it melted the shafts to the collars on the pots freezing them. So he had a service call the next day where he had to replace the pots he sprayed. -- Rick C |
#22
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On 5/1/2017 8:09 PM, Phil Allison wrote:
Micky wrote: I have this vague recollection that WD-40 is good to clean electric contacts?? Either that or it's bad for them. ** WD40 is excellent at making bad contacts good again. Switches, connectors and pots are all examples. Until you use it on one where the plastic bits dissolve and melt together. -- Rick C |
#23
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Prickman is a Liar wrote:
I don't think it will make things worse. Very bad idea. ** Lie number 1. Contact cleaner is specifically formulated for the job ** Lie number two. Most so called "contact cleaners" are hopeless at fixing noisy switches and pots. The solvents use are too weak and evaporate so fast they do not do anything. Plus there is no residual oil to protect metal surfaces from corrosion. A friend used WD40 on some very expensive chemical instrumentation ... ** Why is it always a "friend" who has weird experience with WD40 and never the person posting ?? Cos the story is a complete fabrication. .... Phil |
#24
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Prickman is a Liar wrote:
Phil Allison wrote: ** WD40 is excellent at making bad contacts good again. Switches, connectors and pots are all examples. Until you use it on one where the plastic bits dissolve and melt together. ** Massive LIE !! WD40 does not harm plastics used to make electronic or electrical components. That is the oldest and STUPIDEST crock of **** trotted out by WD40 haters. The Prickman is a parroting MORON. ..... Phil |
#25
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On 02/05/17 10:09, Phil Allison wrote:
Micky wrote: I have this vague recollection that WD-40 is good to clean electric contacts?? Either that or it's bad for them. ** WD40 is excellent at making bad contacts good again. Switches, connectors and pots are all examples. .... Phil I've been meaning to thank you for telling us that some months back. In my Yamaha A-520 stereo amp, I've been putting up for several years now with a noisy/intermittent balance pot for several years. Only one channel working most of the time, and when you finally get both to work, one was significantly louder than the other. It looks like a big job to disassemble it enough to replace. A quick squirt of WD-40 and it seems as good as new. I wouldn't have done it on anyone else's recommendation. Clifford Heath. |
#26
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In message , John
Robertson writes On 2017/05/01 1:24 PM, Wade Garrett wrote: On 5/1/17 3:08 PM, Foxs Mercantile wrote: On 5/1/2017 12:00 PM, Retired wrote: According to WD-40's "List of 2000+ Uses" at https://wd40.com/files/pdf/wd_40_200...d_jan_2017.pdf "€˘ Cleans gunk from electrical contacts" is one of them And most of the 2000 ideas are marketing hype. You're a regular party-pooper! Having cleaned the residue (glue like substance) of WD-40 from many an electrical unit I would say that it's only practical use is for preventing rust on tools. Everything else is hype. There are FAR better solvents out there than WD-40...and cheaper! Cheaper than the old can you've had in the tool-shed for the last 20 years, but which has been your saviour on the odd occasion when you've suddenly needed a general-purpose lubricant / switch cleaner / rusty nut freer / corrosion inhibitor ? -- Ian |
#27
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In message , rickman
writes On 5/1/2017 12:39 PM, Sjouke Burry wrote: On 01.05.17 18:07, Micky wrote: WD-40 to clean electric contacts? I'm on vacation and renting a room, and my landlady has a combination CD/Radio/Cassette?, very compact, portable, works well except fo the little on/off/CD slide switch. The switch doesn't easily make contact, even when pushed to and past the On position. So it's hard to get the radio on, and it turns off by itself in about 30 minutes. Moving the switch back and forth 10 times to clean it hasn't worked yet. Normally what I would do is spray contact cleaner or tuner cleaner in the switch from above, where the plastic slider that goes over the switch is, And normally that doesn't accomplish much. Even taking such things apart and spraying the switch from underneath has taken longer to work than for rheostats, for example, and here I don't want to take it apart. She's only my landlady. I don't know where in this non-English-speaking country to buy contact cleaner and she might balk at the extra money, but she does have something in an aerosol can that looks mighty like WD-40. I have this vague recollection that WD-40 is good to clean electric contacts?? Either that or it's bad for them. Should I try it. BTW, I want to use the radio, so that's one big reason I want it fixed. When it stopped playing while she was there, she said, "Oh, yeah, maybe that's why I bought another one" (She speaks English.) Trying it, will certainly not make things worse. And cleaning/flooding the switch a day or two later with something volatile,(alcohol,turpentine or such) will take care of the wd40 residue(maybe). I don't think it will make things worse. Very bad idea. Contact cleaner is specifically formulated for the job and won't cause any harm to electronics. A friend used WD40 on some very expensive chemical instrumentation as "preventive maintenance" and the volatile solvents in it melted the shafts to the collars on the pots freezing them. So he had a service call the next day where he had to replace the pots he sprayed. While I'm sure that there have been occasions when a squirt of WD40 has dissolved everything in sight, I've been using it for decades, and I've never found it has ever caused any such damage. -- Ian |
#28
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Clifford Heath wrote:
Phil Allison wrote: ** WD40 is excellent at making bad contacts good again. Switches, connectors and pots are all examples. I've been meaning to thank you for telling us that some months back. In my Yamaha A-520 stereo amp, I've been putting up for several years now with a noisy/intermittent balance pot for several years. Only one channel working most of the time, and when you finally get both to work, one was significantly louder than the other. It looks like a big job to disassemble it enough to replace. A quick squirt of WD-40 and it seems as good as new. I wouldn't have done it on anyone else's recommendation. ** Thanks or the vote of confidence. Often, the effect of using a little WD40 is so quick and complete it seems almost magical. ..... Phil |
#29
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" wrote:
A few things on WD-40. Its name means Water Displacement - 40th try. It is, essentially, stoddard solvent, that is highly refined kerosene and a very small amount of very light mineral oil. It is 100% volatile over time. Which is directly related to temperature. Most gunks and goos are soluble in WD-40. But, what is not rinsed away will be evenly distributed when the solvent evaporates. So beware! It is a rather gentle solvent, and does not attack most plastics or finishes. *MOST*, not all! WD-40 is NOT a contact cleaner. What it does along those lines is by rinsing. WD-40 is not a lubricant. It will (temporarily) reconstitute some lubricants under some conditions. Good luck with it, you could do worse. It does not displace water unless it's the blast. It floats on water. PB Blaster displaces water. Greg |
#30
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WD-40 is not designed to remove or protect against rust either. It is meant to *DISPLACE* dampness in the process of cleaning and protecting tools *with something else*.
Try the test. WD-40 is neither voodoo, black magic nor a secret potion. It is a very simple compound designed for a few very basic purposes. https://wd40.com/files/pdf/msds-wd482671453.pdf Peter Wieck Melrose Park, PA |
#31
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On Monday, May 1, 2017 at 8:18:04 PM UTC-4, Phil Allison wrote:
wrote: Stoddard solvent is aka white spirit. ** Which is refined petrol, aka lighter fluid. ..... Phil The MSDS for WD-40 is posted previously. Look up the numbers. Peter Wieck Melrose Park, PA |
#32
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On 02/05/17 12:16, wrote:
WD-40 is not designed to remove or protect against rust either. From the link you quoted: "Product Use: Lubricant, Penetrant, Drives Out Moisture, Removes and Protects Surfaces From Corrosion" Why do you believe that "Removes and Protects Surfaces From Corrosion" does not include removing or protecting against rust? From the Wikipedia article on "Rust": "Rusting is the common term for corrosion of iron and its alloys". .. It is meant to *DISPLACE* dampness in the process of cleaning and protecting tools *with something else*. Try the test. I have, many times. It just works. WD-40 is neither voodoo, black magic nor a secret potion. It is a very simple compound designed for a few very basic purposes. It is not a compound. A compound is a single entity . It is a mixture of compounds (including "non-hazardous ingredients", which appear to be, or include, sodium bisulfite). The actual amounts are given as ranges. https://wd40.com/files/pdf/msds-wd482671453.pdf Peter Wieck Melrose Park, PA -- Jeff |
#33
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On 02/05/17 12:16, wrote:
WD-40 is not designed to remove or protect against rust either. It is meant to *DISPLACE* dampness in the process of cleaning and protecting tools *with something else*. Try the test. WD-40 is neither voodoo, black magic nor a secret potion. It is a very simple compound designed for a few very basic purposes. https://wd40.com/files/pdf/msds-wd482671453.pdf It washes out the proper & better lubricants. We have a sliding door that does get a bit stiff, so a while ago a regular spray of WD40 sorted it - until it got stuck again. Then another respray. Now I've I fixed the respray issue more or less permanently with light machine oil. Actually another known household brand name, 3-in-1. When it later needs a clean, I'll use WD40 - then back with the oil. Because of the advertising, the non-technical "my tv is broke, must be the switch" tend to overuse the product on anything things that are not suited, I'm sure some here will have seen examples of overendevous application on deck mechanics and electronics. -- Adrian C |
#34
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On Monday, May 1, 2017 at 9:31:55 PM UTC-4, Phil Allison wrote:
Prickman is a Liar wrote: Phil Allison wrote: ** WD40 is excellent at making bad contacts good again. Switches, connectors and pots are all examples. Until you use it on one where the plastic bits dissolve and melt together. ** Massive LIE !! WD40 does not harm plastics used to make electronic or electrical components. That is the oldest and STUPIDEST crock of **** trotted out by WD40 haters. The Prickman is a parroting MORON. .... Phil As much as I hate to agree with Phil, I believe he's right. I've learned about unintended solvent welding of plastics with all kinds of spray elixirs, and I've also learned to test each one on soft plastics so I have an idea of what kind of consequences (if any) to expect upon usage. WD40 has never shown any tendency to soften or otherwise affect plastics that I'm aware of. Is there a strange plastic formula that WD might affect that I've never encountered? Possibly, but I've never seen it, at least not at the level that plastic controls might be constructed of. Maybe the "friend's" controls weren't solvent welded at all, but bound by the original hardened lubricant that was dissolved and rehardened later after being flushed into the shaft. |
#35
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On 05/02/2017 01:45 AM, Ian Jackson wrote:
While I'm sure that there have been occasions when a squirt of WD40 has dissolved everything in sight, I've been using it for decades, and I've never found it has ever caused any such damage. - Not WD-40 but I found out that using Lock-Ease on a bicycle chain lock with plastic internal parts is a poor idea ![]() chain wrapped around the bike and an immobile object at the time. |
#36
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#37
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On 02/05/17 13:06, Adrian Caspersz wrote:
Now I've I fixed the respray issue more or less permanently with light machine oil. Actually another known household brand name, 3-in-1. http://www.concept2.co.uk/files/pdf/...3-in-1-Oil.pdf When it later needs a clean, I'll use WD40 - then back with the oil. The money all ends up at the same place! -- Jeff |
#38
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On Tue, 2 May 2017 08:45:41 +0100, Ian Jackson
wrote: In message , rickman writes On 5/1/2017 12:39 PM, Sjouke Burry wrote: On 01.05.17 18:07, Micky wrote: WD-40 to clean electric contacts? I'm on vacation and renting a room, and my landlady has a combination CD/Radio/Cassette?, very compact, portable, works well except fo the little on/off/CD slide switch. The switch doesn't easily make contact, even when pushed to and past the On position. So it's hard to get the radio on, and it turns off by itself in about 30 minutes. Moving the switch back and forth 10 times to clean it hasn't worked yet. Normally what I would do is spray contact cleaner or tuner cleaner in the switch from above, where the plastic slider that goes over the switch is, And normally that doesn't accomplish much. Even taking such things apart and spraying the switch from underneath has taken longer to work than for rheostats, for example, and here I don't want to take it apart. She's only my landlady. I don't know where in this non-English-speaking country to buy contact cleaner and she might balk at the extra money, but she does have something in an aerosol can that looks mighty like WD-40. I have this vague recollection that WD-40 is good to clean electric contacts?? Either that or it's bad for them. Should I try it. BTW, I want to use the radio, so that's one big reason I want it fixed. When it stopped playing while she was there, she said, "Oh, yeah, maybe that's why I bought another one" (She speaks English.) Trying it, will certainly not make things worse. And cleaning/flooding the switch a day or two later with something volatile,(alcohol,turpentine or such) will take care of the wd40 residue(maybe). I don't think it will make things worse. Very bad idea. Contact cleaner is specifically formulated for the job and won't cause any harm to electronics. A friend used WD40 on some very expensive chemical instrumentation as "preventive maintenance" and the volatile solvents in it melted the shafts to the collars on the pots freezing them. So he had a service call the next day where he had to replace the pots he sprayed. While I'm sure that there have been occasions when a squirt of WD40 has dissolved everything in sight, I've been using it for decades, and I've never found it has ever caused any such damage. I can tell you one thing it is DEFINITELY no good for. I have EuroVynyl brand tilt turn side dlider windiws - made with Rehau vinyl extrusions. When cleaning the windows my wife drcided to lubricate the pivot blocks with WD-40.She then could not get the blocks to slide in the track. I ended up moving the top block far enough to pop the window sash out of the sliders, drive the block to the end, cut the top of the track and pry out the block. Luckily I had purchased a few sets of the lovot blocks and other parts fron the manufacturer when I bought the windowsn(I worked for the dealer) so I was able to replace the swollen blocks. No amount of soaking in alcohol or any othe substance was effective in returning the block to the proper size. No idea what kind of plastic it was- but it sure didn't like WD-40. If using wd-40 to disolve hardened grease in a slide switch, ALWAYS finish the job with a contact cleaner to flush out the remains. In automotive switches, like power window, door lock, headlight, etc, when I've had to dissassemble them and clean/polish contacts etc I re-assemble using a synthetic silicone based grease which won't harden.WD 40 can be an effective solvent for softeninf and removing the old "boogers" - . It can also be acceptable for "burnishing" plug-in connectors and keeping them from corroding - things like wiring harnes plugs - but the old TV Tuner dope works a lot better if you can still find it. |
#39
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On Mon, 1 May 2017 15:50:09 -0700 (PDT), "
wrote: On Monday, May 1, 2017 at 5:51:19 PM UTC-4, wrote: WD-40 does not completely evaporate over time unless the temperature is higher than that which is compatible with human life. No, it does completely evaporate. That 'leftover' is the previous skunge dissolved and spread over everything. To prove this out: Take a standard paper towel, clean and dry. Saturate it in WD-40. Leave it on a clean surface in a location in your domicile exposed to normal temperature variations. Check it in 4-20 days depending on ambient temperatures. Don't take my word for it. Peter Wieck Melrose Park, PA Peter, I discovered this residue after cleaning a machine well with solvent and then spraying wirth WD-40. There was left behind a hard coating on all the previously cleaned metal surfaces. I have since learned to use this to advantage when repairing an oil rubbed bronze finish that has been damamged by machining operations. After texturing and oxidizing the bright bronze machined surface I heat, then spray, then heat and then spray again with WD-40. This ends up being almost exactly a US-10 oil rubbed bronze finish and wears identically. Eric |
#40
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On Tuesday, May 2, 2017 at 11:57:29 AM UTC-4, wrote:
Luckily I had purchased a few sets of the lovot blocks and other parts fron the manufacturer when I bought the windowsn(I worked for the dealer) so I was able to replace the swollen blocks. No amount of soaking in alcohol or any othe substance was effective in returning the block to the proper size. No idea what kind of plastic it was- but it sure didn't like WD-40. I've heard of certain materials that swell in the presence of oils. Maybe it wasn't the solvent in the WD but the mineral oil it contains. IOW, any spray with mineral oil might have had the same effect. |
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