Pivot cleaning tip.

Discussion in 'Clock Repair' started by Altashot, Jan 4, 2020.

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  1. Altashot

    Altashot Registered User

    Oct 12, 2017
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    I have found that even after a bath in my ultrasonic, some pivots still sometimes have gunk on them. I use an eraser to clean them. Jab the pivot in it, spin it back and forth a few times then stab it in rodico to remove all eraser debris.
    It works beautifully. 56D59544-BA67-4C45-B511-FDB859FF2231.jpeg

    M.
     
    disciple_dan and POWERSTROKE like this.
  2. woodlawndon

    woodlawndon Registered User
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    Jan 18, 2017
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    An interesting idea and bet it works. What kind of eraser do you use? I only ask because the last 3 movements I worked on were French with tiny pivots, I wouldn't want to put too much pressure on them for fear of bending. As an aside, I think I'll work on some sturdy American-made movements next for a break. The French ones are fun and satisfying to get going but they sure are exacting.
    Don
     
  3. bruce linde

    bruce linde Technical Admin
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    Nov 13, 2011
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    The first thing I thought of was those little French pivots… which break if you even breathe on them.

    If I’m not going to pop gears in the lathe and polish that way, I will carefully clean the pivots off with alcohol and then roll them by hand in 2000 and then 4000 grit sandpaper... a tip i got from a bulletin article by one of the wise elders... not the only (or necessarily best?) method, but i’ve had great success with it.
     
  4. Hans_

    Hans_ Registered User

    Jul 3, 2012
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    Thanks for the tip Altashot. I used to do that when I started over 20 years ago, but gave it up because I didn't know rodico at the time . And as you mentioned, it Does require a jab into rodico for the afterclean.
    Nice tip.

    Hans
     
  5. Altashot

    Altashot Registered User

    Oct 12, 2017
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    I use this type of eraser
    03100D93-3FF9-4F46-A8F1-7C013F004F12.jpeg
    Unlike those found at the end of pencil or pens or those 2 coloured ones, these Mars Plastic don’t seem to contain any abrasives. They remain somewhat soft and rubbery rather than being crumbly.
    I’ve used it on French pivots, with great care, successfully. This trick is not for pivots that can be cleaned with Rodico alone. It’s for those that have a heavy crusty almost baked on crud.

    I prefer not using any abrasives to clean pivots.

    M.
     
  6. R&A

    R&A Registered User

    Oct 21, 2008
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    You can use pith-wood very similar to balsa wood. Less chance of breaking off smaller pivots. I would never use an eraser, it is to dense. Not soft enough for my taste.
    Pithwood 10-Piece Assortment
     
  7. John MacArthur

    John MacArthur Registered User
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    Feb 13, 2007
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    I sure wish they would start carrying the old, firmer pithwood again. It was much better.
    Johnny
     
  8. gmorse

    gmorse Registered User
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    Jan 7, 2011
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    Hi Johnny,

    I agree, the stuff now on offer is rubbish, but I've just bought some Bergeon 7018, sold as 'Absorbing Foam Block, Pith Alternative'. I haven't used it enough yet to comment on its qualities, but it's certainly pretty firm.

    Regards,

    Graham
     
  9. Kevin W.

    Kevin W. Registered User
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    Apr 11, 2002
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    I have used Cratex and it works well, it is some abrasive so go easy on the pivots.
     
  10. John MacArthur

    John MacArthur Registered User
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    Hi Graham - Thank you for that link. Please let us know after you have used it a few times if it seems to be a good replacement for the original pithwood.
    Johnny
     
  11. gmorse

    gmorse Registered User
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    Jan 7, 2011
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    Hi Johnny,

    Yes, I'll certainly pass on my experiences with this material.

    Regards,

    Graham
     

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