Buying a microscope in EU
Re: Buying a microscope in EU
Petrol and Ethanol are good to remove old grease. Test before use if it damages any paintings. The lubricant used must match the function of the part lubricated. If you use some light oil to lubricate the condenser holder for example, the condenser will not hold its place but move slowly downward. Same for the stage. Viscosity of the lubricant is a very important attribute.
Re: Buying a microscope in EU
It's going very well so far... I've cleaned both iris, the one on the condenser I didn't disassemble, just used wd-40 contact cleaner and it magically started working, so cleaned up all the grease and left it unlubricated, it works great. The other one I have disassembled following the instructions on the other forum, cleaned and lubed everything. Thanks @ImperatorRex.
I have also cleaned up the nosepiece following the instructions by Hobbyst46. It is soo much easier to work when you know what to expect. Thanks again...
I still have to clean up the binocular eyepiece mechanism and will not be completely disassembling the focusing mechanism or the stage. They work well now so it would be a shame to ruin. I'm thinking about putting some machine oil to rejuvenate the old grease a bit and I suppose it should work perfectly after that.
I have also cleaned up the nosepiece following the instructions by Hobbyst46. It is soo much easier to work when you know what to expect. Thanks again...
I still have to clean up the binocular eyepiece mechanism and will not be completely disassembling the focusing mechanism or the stage. They work well now so it would be a shame to ruin. I'm thinking about putting some machine oil to rejuvenate the old grease a bit and I suppose it should work perfectly after that.
Re: Buying a microscope in EU
Congratulations on achievements.imkap wrote: ↑Mon Dec 06, 2021 12:09 amI still have to clean up the binocular eyepiece mechanism and will not be completely disassembling the focusing mechanism or the stage. They work well now so it would be a shame to ruin. I'm thinking about putting some machine oil to rejuvenate the old grease a bit and I suppose it should work perfectly after that.
The field iris aperture leaves, like those of the condenser, are better left dry. Totally dry.
The focusing mechanism is over-engineered, delicate, and hard to find as spare part.
The stage is a lot easier to maintain. I followed MicroBob's advise: grease (I used Nye damping but a white lithium grease would also be OK) on the racks.
Machine oil on the Archimedean screw (within the X-wise stage movement).
Never took apart or lubed the eyepiece mechanism.
Shame on Zeiss that there is no easily available maintenance and repair of this microscope, of which so many have been manufactured decades ago.
- ImperatorRex
- Posts: 571
- Joined: Fri Mar 30, 2018 4:12 pm
- Location: Germany
- Contact:
Re: Buying a microscope in EU
Good instructions how to dismantle, clean and re-lube the eye-piece mechanism at the bino is described here:
https://www.mikroskopie-forum.de/index. ... ic=35730.0
I would say it is not that difficult, I did it also once without facing issues. Maybe to mention you need a bit sensivity and patience until you get the exact thread end matching into each orther when you re-assembly the pieces. Do not apply force, it would damage the thread coarse.
https://www.mikroskopie-forum.de/index. ... ic=35730.0
I would say it is not that difficult, I did it also once without facing issues. Maybe to mention you need a bit sensivity and patience until you get the exact thread end matching into each orther when you re-assembly the pieces. Do not apply force, it would damage the thread coarse.
Re: Buying a microscope in EU
Thanks Jochen for the link.
Re: Buying (repairing) a microscope in EU
I have cleaned the bino, it was easy, I thought I was finished and assembled everything. After a few moments I have realized that the stage is not working properly, it was moving left to right just a bit and get stuck. So I have removed and disassembled it, didn't want to use so I don't ruin the gears or something. It seems that some of the small bearing rollers went off...
So now I have some guess, but not sure how (or where exactly) to put them back, I can't seem to find any post on the internet about this... Please help once again
Thanks
So now I have some guess, but not sure how (or where exactly) to put them back, I can't seem to find any post on the internet about this... Please help once again
Thanks
Re: Buying a microscope in EU
Perhaps this old thread may help a bit
viewtopic.php?f=5&t=7990&p=70510&hilit= ... led#p70510
What I can assure that once cleaned and lubricated, it works smoothly for years.
viewtopic.php?f=5&t=7990&p=70510&hilit= ... led#p70510
What I can assure that once cleaned and lubricated, it works smoothly for years.
Re: Buying a microscope in EU
Hi, I went a little deeper I think I might have figured it out, not sure yet, I'll try it on later, now I must go to work...
Not sure how to put these small metal rollers
Not sure how to put these small metal rollers
Re: Buying a microscope in EU
You have progressed far more than I did ...
So just guessing, perhaps the bearing rollers should lie on their "side" so they roll when a rod placed over them moves. Flipped by 90 degrees from the current position.
Similar bearing rollers are used in the focusing mechanism BTW.
This is the "Y-movement" direction of the stage as I see it, the long screw belongs to the X-movement.
Hope someone more knowledgeable chimes in.
Crossing fingers for success of the project..
So just guessing, perhaps the bearing rollers should lie on their "side" so they roll when a rod placed over them moves. Flipped by 90 degrees from the current position.
Similar bearing rollers are used in the focusing mechanism BTW.
This is the "Y-movement" direction of the stage as I see it, the long screw belongs to the X-movement.
Hope someone more knowledgeable chimes in.
Crossing fingers for success of the project..
Re: Buying a microscope in EU
Success, this is how the rollers should be placed. I did this the first time, but it didn't fit well, so I thought I should put them somehow different. It turned out that I didn't align the rail well not the rollers. The right one (on the image) can go a bit left or right, so you need to align it carefully. I just need better grease for this, the ones I have are just not thick enough for the knobs, I've read about dampening grease, but did not find where to buy it. I found some microscope service company locally, so I'll give them a call
The stage is working fine now, but I'll probably open it again when I get some suitable grease. Probably will grease the focusing mechanism too...
Now back to real life
Thanks everyone for your help
P.S. I have made another thread under my microscope, as the title makes no sense anymore
The stage is working fine now, but I'll probably open it again when I get some suitable grease. Probably will grease the focusing mechanism too...
Now back to real life
Thanks everyone for your help
P.S. I have made another thread under my microscope, as the title makes no sense anymore