[TowerTalk] Reliability (or not) of SMA connectors

Jim W7RY jimw7ry at gmail.com
Sun Dec 4 17:16:31 EST 2022


I always keep several bottles of dollar store nail polish around in the 
shop/shack.

I use it to mark vacuum tubes in my Drake stuff, among other marking 
requirements. Especailly handy to mark/color code PL-259 connectors.

73, Jim W7RY


On 12/4/2022 1:41 PM, Lux, Jim wrote:
> On 12/4/22 10:57 AM, Michael Tope wrote:
>> A tiny blob of something really viscous (so it won't crawl up into 
>> the threads by capillary action) like 5 minute epoxy or JB weld would 
>> probably work. You could test it on a nut and bolt the same diameter 
>> to make sure it isn't too hard to remove. 
>
>
> Nail polish is viscous and readily available, and easily removed with 
> a solvent if needed. It's also not too brittle, so it won't crack with 
> small loads. Also because it's solvent based, it tends to work well on 
> fasteners with an oil film, because the oil goes into solution with 
> the solvent. You can also do color coding - red for this year, blue 
> for last year, or bands or whatever.
>
> Probably any lacquer or solvent based paint would work.
>
>
> I'm not sure I'd go with an epoxy - too hard to remove if you get too 
> much on. And, some don't stick well if there's an oil or grease film.
>
>
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-- 
Thanks and 73, Jim W7RY


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