Ok, so I now have a sample of gel to glue between 2 glass pieces. I have my canada balsam. So the next step is to get the glass CLEAN. And I mean clean...
I tried window cleaner and spectacles cleaner.. no good. Next I tried Isopropyl 99.9%, still streaks. Then aceton and not any better. Last I tried Metryl (tricloreethylene replacement) and it is better bus still not clean, still streaks.
Probably HF would do the trick but I'm not that idiotic. Only thing I still can try is ammonia with H2O2. Then I give up.
What is the best way to get glass clean at home? Household stuff, not boiling caustic solutions of worse hot HF. It is uncoated glass, not lens elements.
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