the right cement for doublets

[sanmich]

Hi all

I have managed to separate a doublet that was affected by haze in a nice but cheap pentax lens, and I would like to reassemble it.

Can I use microscope slide mounting fluids?
(this I think I can find)

Or...

would someone here sell me a small quantity of Canada Balsam solution?

Thanks!

 

[Sparrow]

... I think they are the same thing

 

[rbiemer]

Don't have any but you might consider this?
http://www.surplusshed.com/pages/item/b1077.html

I suspect a 1/4 pound chunk of this would enable you to glue very many lenses together!

Rob

 

[aizan]

try this stuff: http://www.edmundoptics.com/lab-production/adhesives/norland-optical-adhesives/37322

 

[sanmich]

... I think they are the same thing

you mean that the microscope mounting fluids are usually based on Canada Balsam?

 

[Freakscene]

you mean that the microscope mounting fluids are usually based on Canada Balsam?

Modern mounting media for microscopy like DepEx are synthetic and not based on Canada balsam. Slides made using Canada balsam are archival, but take a long time to dry.

Marty

 

[Sparrow]

you mean that the microscope mounting fluids are usually based on Canada Balsam?

Yes, as I recall that's what 'glues' the mount to the slide when I was at school

PS ... I just found this on the interweb

 

[Sarcophilus Harrisii]

Canada Balsam is also available economically online. There are several sellers of it. I like the sound of this one that sells filtered balsam. I haven't had a need to tackle optical cementing yet. When I do at some stage I would likely prefer to use balsam. It takes longer to cure but it is arguably better suited to the home repairer, as it allows for fine tuning alignment and, in the event the job has to be re-done, it is not as problematic to separate as synthetics. It doesn't have the same durability either, but with many balsam cemented lenses fifty years old or more still in good usable condition, how long does your repair need to last?
http://www.ebay.com/sch/canada_bals..._DefaultDomain_2&rt=nc&_trksid=p2047675.l2562