[Boatanchors] Cleaning Cigarette-Stained Plastic Knobs

[Carl]

I switched to Greased Lightning after the good 409 disappeared Roger.

Cant guarantee about 303 knobs, sold mine long before the switch.

Carl
KM1H

----- Original Message ----- 
From: "Rodger" <wq9e at dtnspeed.net>
To: <gzook at yahoo.com>
Cc: <boatanchors at mailman.qth.net>
Sent: Sunday, February 01, 2009 5:47 PM
Subject: Re: [Boatanchors] Cleaning Cigarette-Stained Plastic Knobs


>I am with Glen on this one.
>
> The only thing I found better than scrubbing bubbles at lifting 
> nicotine
> was a version of 409 that was labeled industrial strength.  It was 
> sold
> at stores everywhere back in the mid 90's and had a very distinctive
> smell; I used it so much for cleaning vintage gear back then that I
> started associating the smell with old radios.  Unfortunately they
> seemed to have pulled this from the market and the current regular and
> "professional" grades of 409 are not nearly as effective.  However, 
> one
> of our university tech support people says that the same stuff is
> available from another company at industrial cleaning supply stores 
> and
> I am supposed to be receiving some soon.  If it is the same as the old
> industrial 409 I will provide the name of the company that makes it 
> now;
> it was pretty incredible at removing nicotine and it never bothered 
> any
> of the paint or panel labeling that I tried it on.
>
> Rodger WQ9E
>
> Glen Zook wrote:
>> Try Formula 409.  I have had good luck removing nicotine stain with 
>> that.
>>
>> Glen, K9STH
>>
>> Website:  http://k9sth.com
>>
>>
>> --- On Sun, 2/1/09, w0ng at comcast.net <w0ng at comcast.net> wrote:
>>
>> Hello all - I'm in the process of restoring a National NC-303 
>> receiver. The front panel plastic knobs are uniformly stained a light 
>> brown for about 3/4 of their outside surface. I'm presuming it's from 
>> cigatette smoke over many years.The remaining 1/4 portion of each 
>> plastic knob is still the original grey color. I've tried vinegar, 
>> ammonia, plastic polish, scrubbing bubbles bathroom cleaner, kaboom 
>> kitchen cleaner to no avail. I'm hesitant about putting them thru the 
>> dishwasher as it will probably remove the lettering on the center 
>> disk of each knob. Can anything you all know of remove the light 
>> brown stains on the plastic knobs? Any help appreciated. Tnx,
>>
>>
>>
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