[Boatanchors] Cleaning Cigarette-Stained Plastic Knobs

[Bob Hardie- W5UQ]

don't forget that the lettering and silk screened data may come off 
too... be careful... go slow, test, test, test.
B

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,
>
>
>       
> ______________________________________________________________
> Boatanchors mailing list
> Home: http://mailman.qth.net/mailman/listinfo/boatanchors
> Help: http://mailman.qth.net/mmfaq.htm
> Post: mailto:Boatanchors at mailman.qth.net
>
> This list hosted by: http://www.qsl.net
> Please help support this email list: http://www.qsl.net/donate.html
>
> __________ NOD32 3816 (20090201) Information __________
>
> This message was checked by NOD32 antivirus system.
> http://www.eset.com
>
>
>
>   
-------------- next part --------------
A non-text attachment was scrubbed...
Name: W5UQ.vcf
Type: text/x-vcard
Size: 187 bytes
Desc: not available
Url : http://mailman.qth.net/pipermail/boatanchors/attachments/20090201/a34651c9/attachment.vcf