I have some old (WWII binocular) prisms on which the silvering is corroding. I'd like to find a place that will strip off the silver (HNO3 works well I believe) and then vacuum deposit aluminum. I haven't heard back from John at Focal Point; are there any telescope suppliers etc. that do this?
Conversely, does anybody have a DIY protocol for doing this? I can get access to a wet lab and I think I still know somebody in the SEM lab who would operate the vacuum-deposition machine for me (in which case I could use aluminum, silver, gold, etc.).
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