Many of you reading this may recall a thread that I started earlier in 2006, with the above title - this title did make a few readers cringe, like chewing on silver paper!
Just to recap - I asked advice on how to separate the three elements for an old 8 inch Cooke,Troughton & Simms Photo-Visual triplet lens that had been cemented together with canada balsam (in the mists of time, by a previous owner).
The consensus of opinion was that the lens should be soaked in a tub of Xylene, to dissolve the cement.
Well, today (27th December 2006) I now have three (whole!) separated elements - taking around 5 months to separate.
In 2007 I'll begin work on building a 'folded' refractor to hold the F17.5 lens.
Thanks once again for everyone who 'steered' in the right direction on this.
Happy New Year to you All!
Sean
Just to recap - I asked advice on how to separate the three elements for an old 8 inch Cooke,Troughton & Simms Photo-Visual triplet lens that had been cemented together with canada balsam (in the mists of time, by a previous owner).
The consensus of opinion was that the lens should be soaked in a tub of Xylene, to dissolve the cement.
Well, today (27th December 2006) I now have three (whole!) separated elements - taking around 5 months to separate.
In 2007 I'll begin work on building a 'folded' refractor to hold the F17.5 lens.
Thanks once again for everyone who 'steered' in the right direction on this.
Happy New Year to you All!
Sean
