Thread: How Often?
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  #11  
Old 06-01-2023, 08:11 AM
LonelySpoon (Neville)
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Join Date: May 2022
Location: Manton
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Has anyone considered an ultrasonic cleaner? They use one at the Sydney Observatory Museum to clean the 3D glasses...

Maybe not for smears, but those particles around the edge of smaller apertures?


Neville
LSO
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