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contact cleaners

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Post by Ben Delk on Thu Oct 18, 2012 9:13 am

Anyone have suggestions for contact cleaners? Is there a "one product fits all" or do different pots require different sprays?
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Post by Dr. Radio on Thu Oct 18, 2012 11:04 am

Ben,

I've used CRC brand "QD Contact Cleaner" for years with great results. Plastics safe and leaves no residue. Comes in a red and white aerosol can with a straw. The best part is you can buy it at a lot of automotive chain stores in there chemicals and cleaners section. I dislike so-called sprays that "clean and lubricate". I don't like anything that leaves a film or residue, especially on volume pots. If I pot is tough to turn, I use a pen oiler I get at RadioShack that has Teflon in it and lube the shaft.

What I also use to clean circuit boards and contacts/connectors is something you find at a liquor store. It is "Everclear" grain alcohol--190 proof. Put it in an eye dropper or dip a cotton swab and it works wonders...and again completely evaporates.
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Post by Ben Delk on Thu Oct 18, 2012 11:25 am

CRC, haven't tried that, thanks. Everclear....we call the Moonshine in this part of the world. Ha!
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Post by Resistance is Futile on Thu Oct 18, 2012 6:00 pm

190 proof Grain alcohol is not safe on plastics, However it is used in optics for cleaning because it leaves no residue or film. 91-99 percent Isopropyl alcohol is safer and so is 70 ISO alcohol.
Sprays with lubricant for volume controls are OK because they are primarily used for the electrical contacts and carbon tracks, but they must specify for electronic controls such as switches and volume controls. If rotary switches are in need of attention then I would suggest Either cramolin if you can find it or contact cleaner. Cramolin has oils and tarnish cleaners in it and do not need to be removed. Deoxit is the same by the same company. CRC is a good product but some cleaners are aggressive in attacking plastics, so you really have to read the labels. OH! that Freon were still available, also trichloroethane (or is it Trichloroflouroethane?)is another cleaner that has been on the verge of being removed.
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Post by Guest on Thu Oct 18, 2012 6:07 pm

When possible, it's a good idea to put a paper towel under the contacts you want to clean. It helps to keep the cleaner in one place and you can see any residue that is being rinsed off.

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