Author Topic: Cleaning WD-40 of contacts  (Read 4606 times)

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Online Specmaster

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Re: Cleaning WD-40 of contacts
« Reply #25 on: October 22, 2017, 04:09:42 pm »
I thought that Nafta stood for North America Free Trade Agreement?
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Offline glarsson

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Re: Cleaning WD-40 of contacts
« Reply #26 on: October 22, 2017, 04:20:56 pm »
I thought that Nafta stood for North America Free Trade Agreement?
Try "North American PHree Trade Agreement".
 

Online Specmaster

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Re: Cleaning WD-40 of contacts
« Reply #27 on: October 22, 2017, 04:37:01 pm »
I thought that Nafta stood for North America Free Trade Agreement?
Try "North American PHree Trade Agreement".

Do you mean "North American Free Trade Agreement" ?
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Online Ian.M

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Re: Cleaning WD-40 of contacts
« Reply #28 on: October 22, 2017, 05:45:46 pm »
Google Translate works on PDFs:
http://translate.google.com/translate?langpair=auto%7Cen&u=http://gertab.se/shop/810/art66/24966-aa1611-4085.pdf]
Look up the CAS number: 64742-49-0
https://chem.nlm.nih.gov/chemidplus/rn/64742-49-0

That's Light Naptha and from the translated MSDS its the fraction with a boiling point rage of  92-99 deg C.
 
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Offline David Hess

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Re: Cleaning WD-40 of contacts
« Reply #29 on: October 22, 2017, 07:22:45 pm »
There is a WD40 product that is a dedicated switch and contact cleaner but it is important to read beyond the brand name and see what the actual product is called, perhaps the photo prepared by bd139 might help to clear up the confusion surrounding this good product.

...

They should take a leaf out the soap manufacturers book and market the brand name first, i.e., most of the washing powders are made one of the big 2 names, Unilever or Proctor and Gamble, names that you have to hunt for, but Persil, Daz, Aerial, Dreft etc are well known and people understand what that product does.

It would help if they prominently listed the ingredients.  The MSDS (material safety data sheet) for WD-40 Specialist Fast Drying Contact Cleaner indicates that it is isohexane which is effectively purified lighter type naphtha.  It has no lubricants so while it will be a great cleaner, something else will be needed for potentiometers or sliding type switches.
 

Offline Mr. Scram

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Re: Cleaning WD-40 of contacts
« Reply #30 on: October 23, 2017, 01:38:16 am »
:wtf: There is a WD40 product that is a dedicated switch and contact cleaner but it is important to read beyond the brand name and see what the actual product is called, perhaps the photo prepared by bd139 might help to clear up the confusion surrounding this good product. This is what happens when a company promotes its company name first and foremost, especially when for years it has been the maker of predominantly 1 thing, penetrating fluid that has other uses as well.

They should take a leaf out the soap manufacturers book and market the brand name first, i.e., most of the washing powders are made one of the big 2 names, Unilever or Proctor and Gamble, names that you have to hunt for, but Persil, Daz, Aerial, Dreft etc are well known and people understand what that product does.  :-+
I wouldn't say soap manufacturers are a great example. Like you say, they are just the friendly faces people recognize. Underneath, they are pretty much the same.

If you're a little more pessimistic, you might say that having several brands from the same owner or manufacturer creates an illusion of choice and competition, where there actually is little to none.
 

Offline Zucca

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Re: Cleaning WD-40 of contacts
« Reply #31 on: October 23, 2017, 08:34:50 am »
Is there a better way to remove stickers from old devices?

water to remove the paper and a stupid pencil rubber to get the sticky junk off. It´s a bit of work but results are amazing.
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Online 2N3055

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Re: Cleaning WD-40 of contacts
« Reply #32 on: October 23, 2017, 08:42:19 am »
Is there a better way to remove stickers from old devices?

water to remove the paper and a stupid pencil rubber to get the sticky junk off. It´s a bit of work but results are amazing.

I use Kontakt Chemie Kontakt 61... It dissolves glue on stickers. Soak it for a bit, gently remove sticker, wipe off residue, than clean with IPA or if possible, wash plastics with dish detergent, soft brush  and water..
 

Online Specmaster

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Re: Cleaning WD-40 of contacts
« Reply #33 on: October 23, 2017, 08:44:58 am »
I use a product called "Sticky Stuff Remover" which I have only seen sold in Lidl and then it is a special purchase item which they get in about once a year.
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Online macboy

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Re: Cleaning WD-40 of contacts
« Reply #34 on: October 23, 2017, 02:44:15 pm »
Is there a better way to remove stickers from old devices?

water to remove the paper and a stupid pencil rubber to get the sticky junk off. It´s a bit of work but results are amazing.
I hadn't thought of that. I'll try it. I have used "Mr. Clean Magic Eraser" (generically, Melamine foam or Melamine sponge) and it can work well. Note that despite the outwardly soft appearance, these are abrasive and can leave micro-scratches or dull shiny surfaces like paint or plastics.  I'd probably use a white vinyl eraser rather than the pink rubber type for the same reason.

I usually try to stick with 99% IPA since it is generally safe for plastics and paints. (Ethyl alcohol, contained in "denatured" or "methylated" spirits, will quickly destroy some plastics like acrylic). If IPA fails, I have used a citrus oil based cleaner such as "Goo Gone". A light mineral oil (unscented "baby oil") can also work well. The 99% IPA can then remove the oily residue left behind. The mineral oil / baby oil trick also works very well on your hands for removing sticky stuff such as tree sap. A little of the oil dissolves the goo, then soap washes it away easily.
 

Offline Zucca

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Re: Cleaning WD-40 of contacts
« Reply #35 on: October 23, 2017, 03:17:14 pm »
abrasive and can leave micro-scratches or dull shiny surfaces like paint or plastics.  I'd probably use a white vinyl eraser rather than the pink rubber type for the same reason.

oh yeah, best results with white soft pencil rubber:



also strong pressure rubbing sometimes causes little discolorations on plastic ... so be somehow gentle and take your time no stress...   ;)
The sticky junk get "trapped" by the rubber pieces which rolls off...
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