separation anxiety

[GSX4]

Okay, so the best news I've heard in about 6 weeks after purchasing a Dallmeyer 3b came in today!!!

Focal Point have successfully renovated my front Doublet, that's the machining out of the actual lens elements from the mount, separation of elements, cleaning, polishing, and re-cementing, re-mounting of the lens back into the brass housing and rolling the lip over. John emailed me and said I will VERY happy with the way it turned out!! I will know for sure when it arrives on August 1st! It's been a stressful 6 weeks waiting for this thing.

[Sevo]

That is not 100% true. You can get them apart by soaking them. Not an easy thing but very doable.

Actually that is not as hard as splitting a epoxy age (forties to mid seventies) lens group. With the move over from epoxy to cyanacrylate lens cements, chemical separation has become easier - epoxy needs pretty strong and hard to obtain solvents (though I'd stay clear of anything as nasty as methylene chloride - DMF is both more harmless and more effective), while cyanacrylate will dissolve in regular acetone.