I have a Gundlach rapid rectilinear (3 cemented glasses), around 1.5" diameter, soaking in acetone as I type this. In under an hour, I already see a yellowing band around 1/4" forming on the perimeter. Any idea how long it should take before the acetone gets through all the balsam? How long do I need to leave the lenses sitting there soaking? Will the acetone dissolve all the balsam or will I need to peel the lenses apart? How do I clean them off? What are the handling precautions for the acetone? Anything else I should know? Where do I get something to glue the glass back together when it's clean?
Thanks,
Dan
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