Archived posting to the Leica Users Group, 2021/05/22
[Author Prev] [Author Next] [Thread Prev] [Thread Next] [Author Index] [Topic Index] [Home] [Search]You are a patient man! I could not even dream of attempting something like this. Cheers, Nathan Nathan Wajsman Alicante, Spain http://www.frozenlight.eu <http://www.frozenlight.eu/> http:// <http://www.greatpix.eu/>www.greatpix.eu PICTURE OF THE WEEK: http://www.fotocycle.dk/paws <http://www.fotocycle.dk/paws>Blog: http://nathansmusings.wordpress.com/ <http://nathansmusings.wordpress.com/> Cycling: http://www.crazyguyonabike.com/belgiangator <http://www.crazyguyonabike.com/belgiangator> YNWA "I?m not arguing, I?m just explaining why I?m right" > On 23 May 2021, at 04:44, Aram Langhans via LUG <lug at leica-users.org> > wrote: > > I have been looking for a decent microscope ever since I retired 13 years > ago. A biologist w/o a microscope is like a photographer w/o a camera. I > have owned or had access to a microscope ever since 4th grade when I used > my Christmas money to buy a Tasco. When in California I happened to look > at Craig's List and found someone with a nice Nikon scope advertised "Like > New" and two AO scopes missing some lenses he was tossing in all for $100. > It took a few weeks to hook up, but we met in a WalMart parking lot and I > tried them out with power from my RV. They were in sad shape. The AO's > were not bad, but the Nikon was really rough and the fine focus was seized > up but it has nice "Plan" objectives. I like a challenge so I offered $80 > and he took it. Transported them home and took the AO's apart, lubed them > and got one working quite well with a borrowed set of eyepieces from the > Nikon. The second one as an alignment problem probably beyond my ability > to calibrate. I had been using penetrating oil and wrenches on the Nikon > for days trying to free up the shaft, but to no avail. > > I finally figured out how the focusing mechanism might be disassembled on > the Nikon scope and took it apart. I had nothing to loose. Got the fine > focus shaft out of it with a hammer and a punch. It was all corroded and > I think the scope had been dropped as the sleeve was partially bend. > Cleaned it all up. Used a long drill to clean out the sleeve and a rod to > straighten it out. It is now all lubed and put back together, but I need > to replace three set screws that were sheered off either by me or by > someone forcing the focus mechanism. One I have no idea where it is > suppose to go. Small metric. I will visit Tacoma Screw on Monday to see > if I can find anything, or else I will drill and retap with SAE screws. > Still have a stripped focus nob and tensioner I need to figure out, and > the fine focus eccentric bushing that has a spot for 4 set screws but > there were none in sight. I might get this thing working after all. I > took photos of the process so I knew how to put it back together. It is > pretty complex but elegant. Also a shot of the disassembled scope. > > Here is the scope disassembled: > > Nikon Scope-4193 (leica-users.org) > <http://gallery.leica-users.org/v/Aram/misc/sc/Nikon+Scope-4193.jpg.html> > > Then the process involved in taking apart the focusing mechanism and then > the reassembled mechanism starts here: > > Nikon Scope-4178 (leica-users.org) > <http://gallery.leica-users.org/v/Aram/misc/sc/Nikon+Scope-4178.jpg.html> > > Comments welcome > > Aram > > -- > Aram Langhans > (Semi) Retired Science Teacher > & Unemployed photographer > ?The Human Genome Project has proved Darwin more right than Darwin himself > would ever have dared dream.? James D. Watson > > > _______________________________________________ > Leica Users Group. > See http://leica-users.org/mailman/listinfo/lug for more information