Quote Originally Posted by vysk View Post
I thought methylene chloride (found in paint remover) was the proper solvent for balsam and lens cement. That is what I use, last time I did it. I had to soak the doublet for more than a week, at room temp.

Now, if Hasselblad happened to use a more modern UV cured epoxy, then you are stuck (sorry no pun intended). It isn't going to be separated, ever.


Methylene chloride is hard to find in "straight" form, although it might be the best solvent. It's also rather toxic - more so than xylene and much more so than acetone.
Acetone and xylene are off-the-shelf hardware items, too. So is toluene, now that I think of it.

Whatever solvent is used, patience is the key. It might take anything from a week to a month or more.