Thanks everyone for your input. And let me put everyone's fears at ease by saying that this particular sample has been thoroughly abused in environmental testing (including several unintentional & unfortunate CONDENSING temp & humidity runs - ever look into a chamber and see what looks like your product sitting in a cloud? Not fun). Months and tests later, the dirt or grime is easily visible on a lot of the mating surfaces and is not at all present on new samples. Unfortunately, an entire new sample costs over $1M, so let's just say I'm not getting a new one. And for the steel / Al concerns, the different metals are in different sections so mating is not an issue, just the risk of corrosion if I remove the protective coatings.
So, I am simply trying to restore the sample to its original condition (or as close as I can get to it). I would never advocate sprucing up a test sample just to pass a test. And it turns out we use nickel plate which should be quite durable. Again, any comments from experience would be welcome, but my guys say that I shouldn't have problems. Thanks again! Dave Heald David Heald wrote: > > All, > I'm preparing for an emissions test and I had started cleaning some of > my chassis mating surfaces with a pen/pencil eraser then alcohol to > ensure the surface to surface contact was good. A friend then told me > that using an eraser would also remove the anti-corrosive coating that > was on the metal (Thanks Paul!). So I would end up with a very short > term benefit, then rust. What I am trying to determine is if maybe > light rubbing with a pencil eraser might only remove surface > contaminants and leave the metal and coatings intact. (the pencil eraser > is much less abrasive than the pen side) > > So the real question is... Does anyone have direct good or bad > experience with the aftereffects of using a pencil eraser to clean > mating edges (card faceplates in a telco box for example)? I have both > steel and aluminum surfaces to worry about so info for either type is > welcome. (and don't worry the different metal types are not adjacent). > > Any feedback would be greatly appreciated as the system is really dirty > right now. > > Thanks and Best Regards, > Dave Heald > > ------------------------------------------- > This message is from the IEEE EMC Society Product Safety > Technical Committee emc-pstc discussion list. > > Visit our web site at: http://www.ewh.ieee.org/soc/emcs/pstc/ > > To cancel your subscription, send mail to: > majord...@ieee.org > with the single line: > unsubscribe emc-pstc > > For help, send mail to the list administrators: > Ron Pickard: emc-p...@hypercom.com > Dave Heald: davehe...@mediaone.net > > For policy questions, send mail to: > Richard Nute: ri...@ieee.org > Jim Bacher: j.bac...@ieee.org > > All emc-pstc postings are archived and searchable on the web at: > http://ieeepstc.mindcruiser.com/ > Click on "browse" and then "emc-pstc mailing list" ------------------------------------------- This message is from the IEEE EMC Society Product Safety Technical Committee emc-pstc discussion list. Visit our web site at: http://www.ewh.ieee.org/soc/emcs/pstc/ To cancel your subscription, send mail to: majord...@ieee.org with the single line: unsubscribe emc-pstc For help, send mail to the list administrators: Ron Pickard: emc-p...@hypercom.com Dave Heald: davehe...@mediaone.net For policy questions, send mail to: Richard Nute: ri...@ieee.org Jim Bacher: j.bac...@ieee.org All emc-pstc postings are archived and searchable on the web at: http://ieeepstc.mindcruiser.com/ Click on "browse" and then "emc-pstc mailing list"
