I've been told by a Kontakt Chemie rep to use their stuff in this order: First clean/deox using K60, then wash away with KWL and for delicate contacts use K61 for protecting/lubricating the contacts. I've always got a big can of KWL handy, it's a good alround cleaner for electronics. Do not use on optics!
I have to say I prefer the Caig stuff, especially the D5 in the needle dripper bottle. So much less mess. I've had that small bottle for >5 years now and it is maybe 1/5 empty. Not cheap and not readily available but lasts a long time. The FaderLube is also nice for all kinds of pots.
I can second that advice on "Kontakt Chemie" products. They are a subsidiary of CRC for some time now http://www.kontaktchemie.com/KOC/.
For "simple" switches such as used in car electric or power switches, you may also want to look into https://brunox.swiss/index.php/en/products/turbo-spray
Mind the NSF certification... It's also very useful in the workshop. Turbo Spray and Ballistol in my workshop - never ever tempted to use any WD-40 again! ![Grin ;D](https://www.eevblog.com/forum/Smileys/default/xgrin.gif.pagespeed.ic.QVVz6XIT20.png)
Cheers,
THDplusN_okish
Poor Vince is going to need an Excel sheet to weigh all the Pros and Cons to find the "right" contact cleaner now ![Laughing :-DD](https://www.eevblog.com/forum/Smileys/default/smiley_laughing.gif.pagespeed.ce._hfWAz_QHO.gif)
No Excel sheet, but I did compile/copy/paste all of your replies in a little text file
![Cool 8)](https://www.eevblog.com/forum/Smileys/default/xcool.gif.pagespeed.ic.cOxV6sPNRd.png)
@McBryce : thanks for the link at 20 Euros, much more reasonable
![ThumbsUp :-+](https://www.eevblog.com/forum/Smileys/default/icon_smile_thumbsup.gif.pagespeed.ce._JElyJQqdB.gif)
Need to ad 6 euros for shipping though, so ends up at 26 Euros. That said, looking at the other cleaners... most are pretty much just as expensive. As for Amazon, of course I checked, and there is ZERO ad for Deoxit D5 on the French Amazon ! Ze-ro, nada, not a sausage...
![ThumbsDown :--](https://www.eevblog.com/forum/Smileys/default/icon_thumbsdown.gif.pagespeed.ce.D027Y9gZ7m.gif)
I assume you looked on German Amazon. guess the German seller didn't want to be listed on French Amazon, maybe he doesn't want to ship there or whatever
![Confused :-//](https://www.eevblog.com/forum/Smileys/default/confused0024.gif.pagespeed.ce.5xOqKkq0Co.gif)
Anyway, thanks everybody for your replies
![ThumbsUp :-+](https://www.eevblog.com/forum/Smileys/default/icon_smile_thumbsup.gif.pagespeed.ce._JElyJQqdB.gif)
@Andrew : thanks for the cool MRI pics and info !
![Cool 8)](https://www.eevblog.com/forum/Smileys/default/xcool.gif.pagespeed.ic.cOxV6sPNRd.png)
Didn't think a service tech would have to play the janitor, nor be the one actually OPERATING the thing !
![Shocked :o](https://www.eevblog.com/forum/Smileys/default/xshocked.gif.pagespeed.ic.CrwtrNUjLO.png)
I thought you had to be doctor to do it...
@Rob : wow, 20+ current clamps, you're the man !
![Laughing :-DD](https://www.eevblog.com/forum/Smileys/default/smiley_laughing.gif.pagespeed.ce._hfWAz_QHO.gif)
I have yet to do own just ONE clamp ! On the to buy list of course. At least I know who to ask when I will be on the market for one !
![Laughing :-DD](https://www.eevblog.com/forum/Smileys/default/smiley_laughing.gif.pagespeed.ce._hfWAz_QHO.gif)
@Tggzzz : spray can with long straw is required ni my case... only realistic way to get to , and clean the millions of contacts in my old glowing Tek scopes. Full of wafer switches, all 10 stories long, each wafer with 2 dozen contacts all around them... only way is to spray the entire switches assemblies, and work them 2 dozen times.
Storage & sorting : this evening got my second batch of 60x100mm Kraft paper envelopes, so could complete my resistor box. Now have a complete set of envelopes for the E24 from 1R up to 10M.
Even though the vast majority of them are empty... the bow is already too tight.... need to make another one already, a bit longer... and spanning two columns 'cause once I buy new resistors to fill 100% of the envelopes, they will take a lot more volume still...
Made a little spreadsheet so I know what I have, values and quantities, see below. Well I have less stuff than I thought !
![Shocked :o](https://www.eevblog.com/forum/Smileys/default/xshocked.gif.pagespeed.ic.CrwtrNUjLO.png)
I have basically 2 almost complete decades only, and two decades half-populated. And the other decades..; pretty much nothing. Oops... There are much more empty envelops, than populated ones... So I am thinking "plugging holes" in this box doesn't make much sense... might as well put all these crappy carbon resistors in storage / backup, and buy all brand new resistors, 1% metallic, and standardize on that.
Now have many envelopes left over... think they might be useful to hold other components like a little collection of Zener diodes for example...
![](https://www.eevblog.com/forum/testgear/test-equipment-anonymous-(tea)-group-therapy-thread/?action=dlattach;attach=1409044;image)
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