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[ARSCLIST] Cleaning aluminum disks
I have an (uncoated? i.e., silver colored) aluminum disk from Special
Collections on campus which I have been asked to digitize. It needs
cleaning: the surface is dull and fingerprints can be seen (I wondered
if someone took some cleaner and wiped it!). What you recommend I use?
Also, we are having problems playing it. The needle slips over several
grooves. Another disk recorded at the same time (sides 1 & 3, as opposed
to 2 & 4!) played fine. Will cleaning solve this? Or should I do
something else. We are using a Dual turntable with an osmium stylus. I
have seen discussion of weighting the tone-arm, but I want to be sure I
won't wreck it!