[DeTomaso] New approach to ZF cleaning

[Jeff Detrich]

Terry, you must have had it polished afterwards? That's fantastic.

Jeff
6559

On Mon, Jul 24, 2017 at 7:07 PM, Himes, Terry (397C) <
terry.himes at jpl.nasa.gov> wrote:

> Mine after.
>
>
>
> "A Purple Heart proves you were smart enough to hatch a plan,
>  stupid enough to try it and lucky enough to survive!"
>
> Terry W. Himes
> JPL Jet Propulsion Laboratory
> Dawn Spacecraft Team
> Rosetta Sequence Team Lead
> Phone: (818) 393-6261
> Cell:     (818) 653-8213
> thimes at jpl.nasa.gov
> 🇺🇸
>
>
> On 7/24/17, 3:49 PM, "DeTomaso on behalf of Larry Finch via DeTomaso" <
> detomaso-bounces at server.detomasolist.com on behalf of
> detomaso at server.detomasolist.com> wrote:
>
>     All,
>
>     My interest in Rub ’n Buff is driven by the fact that I now have a
> VERY clean ZF.
>
>     I am not aware of anyone having done this previously, but I had my ZF
> cleaned using dry ice blasting. It uses shaved or pelletized dry ice at a
> low nozzle pressure (60psi).
>     There is no media to infiltrate the ZF and so I had it cleaned fully
> assembled.  :-)
>
>     This process is not yet widespread, but is often used for in-place
> cleaning of entire food processing/packaging facilities, as it leaves
> nothing behind that wasn’t already there.
>
>     Search WIKI for ‘dry ice blasting’ to learn more.
>
>     The photos below are the before and after.
>
>     It was more or less clean, but had a deep-in-the-pores oily finish
> that resisted actually getting much cleaner.
>
>     The process took about four hours of shop time. My cash price was
> $300. I had them avoid the side plates, but blasted the poor paint from the
> rear cover.
>
>     It is now amazingly clean, and my goal is to somehow keep it that way.
> It does not, of course, present a uniform finish despite being uniformly
> clean.
>     Forty-five years of use leaves issues. Perhaps a more aggressive media
> would have abraded enough of the long-term stains and flaws to a more
> uniform finish,
>     but you can’t do that with an assembled ZF.
>
>     Thanks to all here and on the PI forum for their feedback. Universal
> response for Rub ’n Buff is positive and my eBay $5.49 tube, with free
> shipping, is on the way.
>
>     Larry
>
>
>
>
>
>
>
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-------------- next part --------------
   Terry, you must have had it polished afterwards? That's fantastic.
   Jeff
   6559

   On Mon, Jul 24, 2017 at 7:07 PM, Himes, Terry (397C)
   <[1]terry.himes at jpl.nasa.gov> wrote:

     Mine after.
     "A Purple Heart proves you were smart enough to hatch a plan,
     A stupid enough to try it and lucky enough to survive!"
     Terry W. Himes
     JPL Jet Propulsion Laboratory
     Dawn Spacecraft Team
     Rosetta Sequence Team Lead
     Phone: (818) 393-6261
     Cell:A  A  A (818) 653-8213
     [2]thimes at jpl.nasa.gov
     d--od-,
     On 7/24/17, 3:49 PM, "DeTomaso on behalf of Larry Finch via
     DeTomaso" <[3]detomaso-bounces at server.detomasolist.com on behalf of
     [4]detomaso at server.detomasolist.com> wrote:

   A  A  All,
   A  A  My interest in Rub an Buff is driven by the fact that I now have
   a VERY clean ZF.
   A  A  I am not aware of anyone having done this previously, but I had
   my ZF cleaned using dry ice blasting. It uses shaved or pelletized dry
   ice at a low nozzle pressure (60psi).
   A  A  There is no media to infiltrate the ZF and so I had it cleaned
   fully assembled.A  :-)
   A  A  This process is not yet widespread, but is often used for
   in-place cleaning of entire food processing/packaging facilities, as it
   leaves nothing behind that wasnat already there.
   A  A  Search WIKI for adry ice blastinga to learn more.
   A  A  The photos below are the before and after.
   A  A  It was more or less clean, but had a deep-in-the-pores oily
   finish that resisted actually getting much cleaner.
   A  A  The process took about four hours of shop time. My cash price was
   $300. I had them avoid the side plates, but blasted the poor paint from
   the rear cover.
   A  A  It is now amazingly clean, and my goal is to somehow keep it that
   way. It does not, of course, present a uniform finish despite being
   uniformly clean.
   A  A  Forty-five years of use leaves issues. Perhaps a more aggressive
   media would have abraded enough of the long-term stains and flaws to a
   more uniform finish,
   A  A  but you canat do that with an assembled ZF.
   A  A  Thanks to all here and on the PI forum for their feedback.
   Universal response for Rub an Buff is positive and my eBay $5.49 tube,
   with free shipping, is on the way.
   A  A  Larry

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References

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   2. mailto:thimes at jpl.nasa.gov
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   4. mailto:detomaso at server.detomasolist.com
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