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A Community Devoted to the Preservation and Practice of Celestial Navigation and Other Methods of Traditional Wayfinding
Re: Sextants and Glue [was Sisteco Prismatic Compass]
From: Fred Hebard
Date: 2004 Mar 20, 12:17 -0500
From: Fred Hebard
Date: 2004 Mar 20, 12:17 -0500
Thanks Joel On Mar 20, 2004, at 11:53 AM, Joel Jacobs wrote: > Hi Fred, > > I suggest you get some Cyanoacrylate clue. It come is various > viscosities. > The one I like is blue labeled Super Thin with a cure rate of 1-3 sec. > > Experiment with this on some test items until you feel comfortable > with its > running action. > > A companion product is Un -Cure, a debonder. > > The glue is space age technology, and will work with anything. > > Best Source: Your local hobby shop. > > I also have some spare parts that might work though they are Japanese, > not > C-P. > > Joel Jacobs > > ----- Original Message ----- > From: "Fred Hebard"> To: > Sent: Saturday, March 20, 2004 8:56 AM > Subject: Re: Sextants and Glue [was Sisteco Prismatic Compass] > > >> Jared, >> >> I believe my sextant is the C&P Professional Sextant, as referred to >> on >> their website. However, I am not familiar with older designs. >> >> It has 3 horizon and 4 index filters plus an astigmatizer added to the >> the index filter rack. There is no added button on the micrometer >> dial >> for adjusting for dip and index error. The mirror housings are >> aluminum, as best as I can tell. >> >> Most lens systems I have disassembled glued the compound lenses >> together, but mounted them with threaded rings in the barrel. >> Retaining clips also could be used for filters. >> >> If it's so easy to replace, do you know how I might dissolve the old >> glue clinging to the two horizon filters that have fallen out and what >> sort of glue I should use to replace them? >> >> Fred >> >> >> >> On Mar 19, 2004, at 8:02 PM, Jared Sherman wrote: >> >>> Fred, I would bear in mind that most of the finest camera lenses in >>> the >>> world today are in fact built up from multiple elements--glued >>> together. >>> Glue is literally the stuff that makes precision optics possible >>> today. >>> >>> If the alignment and material selection is done properly, the glue >>> joint is >>> stronger, lighter, and thinner than screwed metal rings. It will >>> never >>> seize >>> up, and it is easily replaced when and if need be. >>> >>> There are also combat aircraft whose wings are literally glued on. >>> Glue is >>> not necessarily a bad thing! And if it happens to keep down the cost >>> of the >>> sextant, even better. >>> >>> Which sextant did you get? How big is the filter rack on it? (How >>> many >>> filters?) >>> >