I've always used a silicon spray on plastics, but NEVER applied it directly via the spray can, for fear of what the propellant might do to the plastic parts. I apply the spray to a Q-Tip, then apply the Q-Tip where I want the silicon to go. Never had a problem doing it that way. Ira.




On 10/7/2014 9:05 AM, JohnK wrote:
On the subject of lubricating plastics...
Nylon expands if it absorbs oils and greases [mineral vs vegetable ? i didn't check]. This means that certain nylon assemblies can bind. The usual lubricant seen on plastic gears is a grease with a filler ... like the white grease used on curtain tracks [here, the easiest to source in small quantities]. I use a couple of different grades of a yellow looking grease - something with zinc oxide filler I think. It is automotive stuff. The filler slows the grease running/dripping off parts in hot weather.
John K.

    ----- Original Message -----
    *From:* Dekatron42 <mailto:[email protected]>
    *To:* [email protected]
    <mailto:[email protected]>
    *Sent:* Wednesday, October 08, 2014 1:55 AM
    *Subject:* [neonixie-l] Re: Finished restoring a TIMEON 2000,
    motor driven Nixie clock from 1968!

    Hi Ali,

    Sorry for late reply but I tried to find out what lubricants could
    be used that would not dissolve the plastic parts, however I have
    not found any definite answer. In my clock I removed the extra
    lubricant that was smeared across the plastic and put in a small
    cup and then re-used it after cleaning. The motor bearings can be
    lubricated with for instance sewing machine oil.

    Cleaning the shafts and lubricating them again and also cleaning
    the contacts is usually what is needed.

    What differences can you spot in your clock, is the electrical
    wiring the same? Is yours a 24 hour clock or 12 hour like mine?

    Cheers,

    Martin
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