[filmscanners] about air compressors

["HPA" <tom@historicphotoarchive.com>]

There are two basic types of air compressors, ones that use oil in the
pistons and ones that don't.  I have had a bad experience in the past when
trace amounts of this oil were blown onto a negative and several years later
it developed spots there.  Now I use a medical, or breathing, compressor.
It is designed for breathing.  It puts out 40lb which is perfect for
negatives and slides.  I use a foot pedal to turn it on momentarily. It
works perfect.  I got it at a thrift store for $5.  For a nozzle, I use one
that came with the old "Dust-off" cans they used to sell at camera stores.
Tom Robinson

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