Any suggestions to re-balsam lens cells...? or I'm dreaming!

[Bernard_L]

@ Miguel Coquis.
The lab where I work uses UV curing glue. It is discarded every 6 months, as per manufacturer's recommendations. You can have, for the cost of postage, a just-discarded bottle of glue, provided you wait for the right time. Or, the one that was discarded last January, and kept in my fridge since then. I already sent some to a guy in Norway to re-cement something in the RF assembly of a 35mm camera, and he reported success.

If you are interested, send me a PM

[Old-N-Feeble]

Oh... now you've opened a big can of worms. You're gonna get hit a many requests. LOL!!

[Pierre 2]

Just found this link which should be of great interest, whatever bonding material is used.

http://web.archive.org/web/200702201...al/manual.html

Pierre

[Randy]

After separating two elements a couple years ago (soaked for about 7 days in acetone) I just put a drop of vegetable oil between them and put the lens back together. No messing with glue / balsam. Sold the lens a year later and it was still clear. Told the buyer to just clean and replace the oil if it ever discolored. I think that may be a "Galli" trick...but not sure where I got it.

[Tin Can]

After separating two elements a couple years ago (soaked for about 7 days in acetone) I just put a drop of vegetable oil between them and put the lens back together. No messing with glue / balsam. Sold the lens a year later and it was still clear. Told the buyer to just clean and replace the oil if it ever discolored. I think that may be a "Galli" trick...but not sure where I got it.

That sounds very easy. Too easy.

I will try it sooner or later.

Why not?

[Steven Tribe]

Oil is the early telescope achromatic system. Another system was three very thin pewter strips at the edge of the lens. I had an early Frauenhofer telescope with this system which still worked OK.

[Bernard_L]

Another system was three very thin pewter strips at the edge of the lens(...) still worked OK

Balsam is specifically used because it has an index of refraction close to that of glass. Not so with air.

[RSalles]

MC,

Last time I planned to send a Voightlaender with balsam separation to this guy the service was rated at US$150.00,
https://www.facebook.com/CLAmanualfocuslens

Cheers,

Renato

[Steven Tribe]

Sending things for repair across trade barriers is full of problems and you are automatically under suspicion for attempted fraud.

[RSalles]

Yes, money laundry of 150 US bucks.



Renato