Then apply D100 to a foam swab applicator (Swab-It brand works well for me *do not* use cotton applicators like Q-tips, they'll leave lint everywhere) and use it to gently scrub the metal discs on each wafer. After about 10 minutes, spray it off with 91% Iso, turn the switch some more, spray again and let it dry. Basically you just coat each wafer with it and keep turning the switch. For rotary switches, I use the D5 mix with the eye dropper. The alcohol will evaporate and leave some DeoxIT as a coating. ![]() Flush with 91% Iso, blow the switches out from behind with canned air and finally, give each switch a 0.1ml shot of the D5 mix operate each switch once or twice after injection to make sure both sides of both contacts are coated (if it's >=DPDT switch). After this, let it dry for about an hour, then operate the switches for a few minutes each this will break up any remaining oxidation. I use a 1ml syringe to inject the D/Iso mix into ganged push button switches from behind (inject some, operate switch, repeat) using about 0.2ml per switch. I also make up bottles of DeoxIT Gold and Shield the same way. Shake throughly! This ends up being a 5:95 mix, just like the spray cans. I add 1ml D100 and 19ml of 91% Iso Alcohol. Here's how: I use 20ml glass bottles with the droppers built into the cap. ![]() ![]() I don't buy that anymore, instead I get the glass bottles of D100 (which is 100% DeoxIT) with the brush applicator (like a fingernail polish bottle) and make my own D5. The DeoxIT in spray cans is basically 5% D100 and 95% Isopropanol Alcohol, plus aerosol this used to be called DeoxIT D5.
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