I have two lenses that have some separation that I'd like to recement: a Wollensak Series 1a convertible and a 19" Dagor. And now is the right time to do so, as I still have the facilities (reagent-grade chemicals, fume hood, UV lamps, programmable industrial oven, etc.). I've settled on Summers J-91 UV-cure adhesive (thanks to Kevin Crisp), and have the basic knowledge of marking the cells on the rim to maintain proper orientation, using magnets and a steel plate to align the elements by the rim, etc. But in my relative ignorance I don't know how much I don't know. Is there a published protocol etc. that I could use? E.g., should I cement and cure all three elements at once, or only do two at a time?
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