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Basic techniques to repair lenses (and cameras)
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PostPosted: Fri Dec 09, 2011 7:32 am    Post subject: Reply with quote
Jesito wrote:
ZoneV wrote:
I worked with a spanner wrench at work and was dissapointed.
My modified big old caliper was much better - here are some pictures of it:

It is big enoug for all the lenses I open Very Happy

For some tasks I use a part of a bicycle tube. The rubber is good to open some filter rings. But I still need something like those rubbers you mentioned.

For flash capacitor draining I build a adjustable resistor with high voltag cables - but I think there are better commercial devices to buy - for less money.

I use Wiha PicoFinish Phillips screwdrivers.


Thanks for the info!. The caliper mod is a sound idea... I think I have a spare one to try Wink The benefit is the big handle that will provide a good push.

To discharge capacitors, I built this unit that is very effective:



The diodes provide a fixed voltage to the LEDs that light whilst there is energy stored in the capacitor. The resistor R1 has to be able of disipating 5 Watt or more...

Regards.
Jes.

Nice idea. But that resistor is needless to be as much as 5W. The energy stored in a such capacitor found in flashes isn't enough to even heat up an 0,5W resistor. The only consideration you have to count with is the maximum voltage that the resistor has to handle. Because of this, a 1-2W one is recommended, these bigger in size ones will surely handle that 300V. And another upgrade: Common zener diodes around 2-3V (the sum of the 4x1n400x) are able to handle the current limited by R1 easily, so if available, it's much easier to put two of them in series connected by the same end of them together. This will form a zener+normal diode voltage drop in each direction and with the resistor sized down, makes the whole curcuit much more compact, enabling easier handling and accessing of the flash capacitor without unnecessairy steps.


PostPosted: Fri Dec 09, 2011 8:05 pm    Post subject: Reply with quote
didyman wrote:
Jesito wrote:
ZoneV wrote:
I worked with a spanner wrench at work and was dissapointed.
My modified big old caliper was much better - here are some pictures of it:
http://www.4photos.de/camera-diy/kamera-reparatur-werkzeug.html
It is big enoug for all the lenses I open Very Happy

For some tasks I use a part of a bicycle tube. The rubber is good to open some filter rings. But I still need something like those rubbers you mentioned.

For flash capacitor draining I build a adjustable resistor with high voltag cables - but I think there are better commercial devices to buy - for less money.

I use Wiha PicoFinish Phillips screwdrivers.


Thanks for the info!. The caliper mod is a sound idea... I think I have a spare one to try Wink The benefit is the big handle that will provide a good push.

To discharge capacitors, I built this unit that is very effective:



The diodes provide a fixed voltage to the LEDs that light whilst there is energy stored in the capacitor. The resistor R1 has to be able of disipating 5 Watt or more...

Regards.
Jes.

Nice idea. But that resistor is needless to be as much as 5W. The energy stored in a such capacitor found in flashes isn't enough to even heat up an 0,5W resistor. The only consideration you have to count with is the maximum voltage that the resistor has to handle. Because of this, a 1-2W one is recommended, these bigger in size ones will surely handle that 300V. And another upgrade: Common zener diodes around 2-3V (the sum of the 4x1n400x) are able to handle the current limited by R1 easily, so if available, it's much easier to put two of them in series connected by the same end of them together. This will form a zener+normal diode voltage drop in each direction and with the resistor sized down, makes the whole curcuit much more compact, enabling easier handling and accessing of the flash capacitor without unnecessairy steps.


PostPosted: Fri Dec 09, 2011 10:14 pm    Post subject: Reply with quote
Welcome DIYMan!


PostPosted: Mon Mar 19, 2012 6:52 pm    Post subject: Reply with quote
I want to bump this thread by asking a simple question.
Can i find this tools on the internet?
I have a nice set of screwdrivers (i've opened my 50D and 20D several times and repaired my 18-55 IS Very Happy) but i don't have any of those special tools for disassembling a lens.
I'm talking about those rubber stuff and spanner wrench. Any indication about where i can buy such tools?


PostPosted: Fri Apr 27, 2012 12:49 pm    Post subject: Reply with quote
Many thanks for topicstarter for information Smile

I have a small question: did anyone use Wiha tools? For example, such a Wiha 26199 Slotted and Phillips Screwdriver Set


PostPosted: Fri Apr 27, 2012 2:34 pm    Post subject: Reply with quote
A link to some info on the dirrerences between Phillips and Cross Point:

http://www.pierfishing.com/resources/index.php?id=the_screwdriver_-_part_2


PostPosted: Wed Jul 18, 2012 7:33 pm    Post subject: Reply with quote
awesome but I still don't think I can do it.. Embarassed can I just send my bad lens to you? Embarassed


PostPosted: Wed Aug 08, 2012 7:58 am    Post subject: Reply with quote
Hi,
I am about to put together my own cleaning set. I found this thread very helpful. Can someone please tell me where I can find these Calibrated rubber tubes in the UK (or alternatively on the internet)?
Ideally I would like to have everything as a set in a small box or so ... so that I don't have to shop for every single item ... is this available somewhere?
Thanks,
Diddy


PostPosted: Wed Aug 08, 2012 10:15 am    Post subject: Reply with quote
diddy wrote:
Hi,
I am about to put together my own cleaning set. I found this thread very helpful. Can someone please tell me where I can find these Calibrated rubber tubes in the UK (or alternatively on the internet)?
Ideally I would like to have everything as a set in a small box or so ... so that I don't have to shop for every single item ... is this available somewhere?
Thanks,
Diddy


It was in the past, our colleague Alex (from China) was providing them, but he suddenly disappeared.
Since them I've been unable to find a set in boxes like the one he provided...

Jes.


PostPosted: Wed Aug 08, 2012 10:50 am    Post subject: Reply with quote
I bought these:

http://www.ebay.com/itm/Rubber-Repair-tool-set-Ring-Filter-Removal-Spanner-Wrench-For-DSLR-Lens-37-86mm-/170876775658?pt=LH_DefaultDomain_0&hash=item27c90cacea

Seller has more than one set of wrenches. I asked what's the difference, and got recommend this set - not the most expensive, but the one that has most positive feedback:
http://www.ebay.com/itm/ws/eBayISAPI.dll?ViewItem&item=180916649400

JIS screwdrive set from Amazon.com

Still missing grease pack and fungus killer chemicals.
Can anyone recommend a grease pack with a link? ebay?

Thanks

Rubbers are good. I don't have other to compare, but feel perfectly with the force of my hands. Use them 10 times now.

Wrenches are ok too. I just need it twice until now.

Filter dent repair tool is on the way.


PostPosted: Wed Aug 08, 2012 12:24 pm    Post subject: Reply with quote
vertolet wrote:
Many thanks for topicstarter for information Smile

I have a small question: did anyone use Wiha tools? For example, such a Wiha 26199 Slotted and Phillips Screwdriver Set


Yes, I use these. They work well enough for my work with these Japanese JCIS screw heads - but I am sure the modification or right screwdrivers would be a bit better.
http://www.buonaluce.com/JCIS.pdf


PostPosted: Thu Aug 09, 2012 7:03 pm    Post subject: Reply with quote
Many thanks for providing the links! I'll definitely order the rubber repair tool.
So now I only have to find the chemicals to remove the fungus.


PostPosted: Tue Oct 16, 2012 10:20 am    Post subject: choosing a name-ring opening tool Reply with quote
Hi guys,
... Please help in choosing a proper name ring removal tool ...

UPDATED:
For those who are interested - some discussion of uncrewing techniques has taken place here - http://forum.mflenses.com/rubber-tools-t53739.html


PostPosted: Tue Jan 15, 2013 12:17 pm    Post subject: Reply with quote
this Japanese shop offers a huge selection of quality lens and camera repair tools and ships internationally: http://www.japan-hobby-tool.com/index_eng.php


PostPosted: Sun Mar 31, 2013 9:47 am    Post subject: Reply with quote
Anyone can recommend good black enamel to repair lost paint on the camera body? Preferably withing EU. Thanks


PostPosted: Sun Mar 31, 2013 2:29 pm    Post subject: Reply with quote
kuuan wrote:
this Japanese shop offers a huge selection of quality lens and camera repair tools and ships internationally: http://www.japan-hobby-tool.com/index_eng.php

They have a eBay store too and here is the link to the tools.
http://www.ebay.com/sch/Other-/162480/i.html?_ssn=japan-hobby-tool


PostPosted: Mon Apr 01, 2013 4:52 am    Post subject: Reply with quote
Alex H wrote:
Anyone can recommend good black enamel to repair lost paint on the camera body? Preferably withing EU. Thanks


Seconded...................? Confused

Very useful thread, I've ordered this set pf lens wrench, we shall see how they perform for the price.

http://www.ebay.co.uk/itm/200978102480?ssPageName=STRK:MEWNX:IT&_trksid=p3984.m1439.l2649


PostPosted: Mon Oct 27, 2014 12:58 pm    Post subject: Reply with quote
This is how I used a plastic mug for dismantling a Zeiss 50/4 Embarassed (Sorry, I had no tools)

1. Find a mug of matching diameter (this red one matched nicely)
2. Put several pieces of two-sided scotch on the rim of the mug



3. Voila!



PostPosted: Mon Oct 27, 2014 3:03 pm    Post subject: Reply with quote
a great idea!!!


PostPosted: Sat Aug 29, 2015 12:52 pm    Post subject: Reply with quote
I read that you need 'JIS' screwdrivers NOT Philips type -- well I went to the Philippines and asked in a big store in Ayala Mall and told them I needed 'JIS' But the Guy sold me a set of small philips after all but it was less than £ 1-00 so I left it in Philippines for my Sister-in-law. Where can i get the small JIS type that is used for taking off the base-plate of my ME Super and such cameras ?
PS -- I am in ENGLAND and all the 'links' I have looked at are in American $$$$ and companies in USA !


PostPosted: Sat Aug 29, 2015 1:38 pm    Post subject: Reply with quote
pentaxpete wrote:
I read that you need 'JIS' screwdrivers NOT Philips type -- well I went to the Philippines and asked in a big store in Ayala Mall and told them I needed 'JIS' But the Guy sold me a set of small philips after all but it was less than £ 1-00 so I left it in Philippines for my Sister-in-law. Where can i get the small JIS type that is used for taking off the base-plate of my ME Super and such cameras ?
PS -- I am in ENGLAND and all the 'links' I have looked at are in American $$$$ and companies in USA !


Have you already looked here?

http://www.micro-tools.de/en/home/

They are shipping from Germany which shouldn't be a problem to England (EU-domestic).


PostPosted: Sat Aug 29, 2015 9:26 pm    Post subject: Reply with quote
When I took a camera repair class, the instructor said the correct screwdrivers to use are called "crosspoint". You can easily see the difference just by looking at them. A phillips is much pointier. I have successfully blunted phillips points with sandpaper or grinding stones so their point angle matches that of a crosspoint and this will work in a pinch.

I have found that typically the screwdrivers found in the small jeweler's screwdriver sets you see are crosspoints and not phillips.


PostPosted: Thu Jan 07, 2016 5:00 am    Post subject: Reply with quote
Can someone fix the OP post photos, they are not showing. Thanks!


PostPosted: Thu Jul 21, 2016 12:54 pm    Post subject: Reply with quote
I have the same problem vanylapep... I can't see the photos on the first page. Jesito, can you put again the photos of your first intervention?

Many thanks.


PostPosted: Thu Dec 29, 2016 7:58 pm    Post subject: Reply with quote
Looking for a lens element suction tool.


Thoughts on where to get one?
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