Archived posting to the Leica Users Group, 1997/08/19

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Subject: Re: Scratched film - how to avoid
From: c.blaue@bmsg.de
Date: Tue, 19 Aug 1997 13:38:27 +0200

>>>>> " " == Patrick G Sobalvarro <pgs@sobalvarro.org> writes:
  <snip>
     > Compressed
     > air, whether clean or not, should never be directed into precision
     > machinery.  It will blow particles in the machinery into recesses
     > between the parts, where the mating surfaces will be scored or offset
     > from each other and the machinery's precision will be compromised.

I agree with Patrick and thus I use the vacuum cleaner with its soft brush to
clean photo equipment. I don't even touch the things with the soft brush. I
use a special photo brush while running the vacuum cleaner. Dust or other tiny
bits of dirt fly away and vanish immediately in the vacuum cleaner. 

An additional problem with compressed air is moisture: depending on the
temparature and humidity of the air it is possible that you blow tiny drops of
water into your equipment no matter how good the air was cleaned.

christoph