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valjo
Joined: 10 Oct 2008
Posts: 68
Location: Bulgaria
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 Posted: Sun May 03, 2015 11:58 am Post subject: Cleaning the battery compartment area?! |
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valjo wrote:
I bought today Asahi Pentax Spotmatic.
The cover of the battery compartment can not be unscrewеd.
How to clean properly the battery compartment area (inside and outside) from green-rusty oxide stains?
Without sandpaper please!
 
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Canon D60
3.5/135 Jupiter 37A
Last edited by valjo on Sun May 03, 2015 3:18 pm; edited 1 time in total |
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cooltouch
Joined: 15 Jan 2009
Posts: 9109
Location: Houston, Texas
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| Posted: Sun May 03, 2015 3:04 pm Post subject: |
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cooltouch wrote:
I would start off by soaking it in a solution containing baking soda. If necessary, follow up by soaking it in vinegar. Lastly, try using a good penetrant, like those that can be found in auto parts stores. None of these will harm the metal.
Also, you might try taking a small file to the rounded over edges of the coin slot, so that a coin will have a vertical lip to pry against.
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Michael
My Gear List: http://michaelmcbroom.com/photo/gear.html
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visualopsins
Joined: 05 Mar 2009
Posts: 10362
Location: California
Expire: 2021-06-22
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| Posted: Sun May 03, 2015 3:08 pm Post subject: |
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visualopsins wrote:
Distilled vinegar on q-tip/earbud to wipe away -- let vinegar sit wet on corrosion for some minutes to dissolve before -- wash off vinegar with water afterward...
Use a #10 screwdriver for slotted screw cover -- much much better than big screwdriver, the small blade fits deep into cover slot, gives better grip for applying more torque.
Somebody knows of commercial products. 
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☮☮☮☮☮☮☮☮☮☮☮☮☮☮☮☮☮☮☮☮☮☮☮☮☮☮☮☮☮☮☮☮ like attracts like! ☮☮☮☮☮☮☮☮☮☮☮☮☮☮☮☮☮☮☮☮☮☮☮☮☮☮☮☮☮☮☮☮
Cameras: Sony A7Rii, Spotmatics II, F, and ESII, Nikon P4
M42 Asahi Optical Co., Lenses:
Takumar 1:4 f=35mm, 1:2 f=58mm (Sonnar), 1:2.4 f=58mm (Heliar), 1:2.2 f=55mm (Gaussian), 1:2.8 f=105mm (Model I), 1:2.8/105 (Model II), 1:5.6/200
Tele-Takumar 1:5.6/200, 1:6.3/300
Macro-Takumar 1:4/50
Auto-Takumar 1:2.3 f=35, 1:1.8 f=55mm, 1:2.2 f=55mm
Super-TAKUMAR 1:3.5/28 (fat), 1:2/35 (Fat), 1:1.4/50 (8-element),
Super-Multi-Coated Fisheye-TAKUMAR 1:4/17
Super-Multi-Coated TAKUMAR 1:4.5/20, 1:3.5/24, 1:3.5/28, 1:2/35, 1:3.5/35, 1:1.8/85, 1:1.9/85 1:2.8/105, 1:3.5/135, 1:2.5/135 (II), 1:4/150, 1:4/200, 1:4/300, 1:4.5/500
Super-Multi-Coated Macro-TAKUMAR 1:4/50, 1:4/100
Super-Multi-Coated Bellows-TAKUMAR 1:4/100
SMC TAKUMAR 1:1.4/50, 1:1.8/55
Other lenses:
Carl Zeiss Jena Flektogon 2.4/35
SMC PENTAX ZOOM 1:3.5 35~105mm, SMC PENTAX ZOOM 1:4 45~125mm
Nikon Micro-NIKKOR-P-C Auto 1:3.5 f=55mm, NIKKOR-P Auto 105mm f/2.5 Pre-AI (Sonnar), Micro-NIKKOR 105mm 1:4 AI, NIKKOR AI-S 35-135mm f/3,5-4,5
Tamron SP 17mm f/3.5 (51B), Tamron SP 17mm f/3.5 (51BB), SP 500mm f/8 (55BB), SP 70-210mm f/3.5 (19AH)
Vivitar 100mm 1:2.8 MC 1:1 Macro Telephoto
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Lloydy
Joined: 02 Sep 2009
Posts: 7768
Location: Ironbridge. UK.
Expire: 2022-01-01
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| Posted: Sun May 03, 2015 5:25 pm Post subject: |
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Lloydy wrote:
Vinegar on Q Tip / cotton bud and let it soak. Then I use another Q Tip with water to rise it off. I find a coin fits the slot perfectly.
If that doesn't work, take the bottom plate off the camera, it's just 4 screws and the only thing to be be careful of is the tiny plastic button for the film rewind. With the bottom plate off you can soak the plate in vinegar.
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LENSES & CAMERAS FOR SALE.....
I have loads of stuff that I have to get rid of, if you see me commenting about something I have got and you want one, ask me.
My Flickr https://www.flickr.com/photos/mudplugga/
My ipernity -
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cooltouch
Joined: 15 Jan 2009
Posts: 9109
Location: Houston, Texas
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| Posted: Sun May 03, 2015 5:43 pm Post subject: |
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cooltouch wrote:
| Lloydy wrote: |
Vinegar on Q Tip / cotton bud and let it soak. Then I use another Q Tip with water to rise it off. I find a coin fits the slot perfectly.
If that doesn't work, take the bottom plate off the camera, it's just 4 screws and the only thing to be be careful of is the tiny plastic button for the film rewind. With the bottom plate off you can soak the plate in vinegar. |
It's already off, so immersion isn't a problem. That's what I'd do, really -- better chance of the liquid reaching every tiny crack and crevice.
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Michael
My Gear List: http://michaelmcbroom.com/photo/gear.html
My Gallery: http://michaelmcbroom.com/gallery3/index.php/
My Flickr Page: https://www.flickr.com/photos/11308754@N08/albums
My Music: https://soundcloud.com/michaelmcbroom/albums
My Blog: http://michaelmcbroom.com/blogistan/ |
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Lloydy
Joined: 02 Sep 2009
Posts: 7768
Location: Ironbridge. UK.
Expire: 2022-01-01
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| Posted: Sun May 03, 2015 6:15 pm Post subject: |
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Lloydy wrote:
You're right  I'm not paying attention.
valjo, if it's corroded beyond repair I think I have a spare bottom plate.
_________________
LENSES & CAMERAS FOR SALE.....
I have loads of stuff that I have to get rid of, if you see me commenting about something I have got and you want one, ask me.
My Flickr https://www.flickr.com/photos/mudplugga/
My ipernity -
http://www.ipernity.com/home/294337 |
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visualopsins
Joined: 05 Mar 2009
Posts: 10362
Location: California
Expire: 2021-06-22
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| Posted: Sun May 03, 2015 7:05 pm Post subject: |
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visualopsins wrote:
| Lloydy wrote: |
| ... I find a coin fits the slot perfectly. |
Yes, slot is made for coin.
Tip: a #10 screwdriver gives a lot more torque than a coin because it sits deeper in the slot it grips better and doesn't "walk out" like the coin, which grips only a tiny bit of metal at the top ends of the slot. Driver doesn't mar the slot in my experience with a few of these that weren't as corroded as this one.
Tip: neat wintergreen oil is in many commercial penetrating oils used for unlocking corroded parts, such as "Marvel Mystery Oil" -- it works great!
Tip: WD40 is for Water Dispersion, not for unlocking corroded parts.
_________________
☮☮☮☮☮☮☮☮☮☮☮☮☮☮☮☮☮☮☮☮☮☮☮☮☮☮☮☮☮☮☮☮ like attracts like! ☮☮☮☮☮☮☮☮☮☮☮☮☮☮☮☮☮☮☮☮☮☮☮☮☮☮☮☮☮☮☮☮
Cameras: Sony A7Rii, Spotmatics II, F, and ESII, Nikon P4
M42 Asahi Optical Co., Lenses:
Takumar 1:4 f=35mm, 1:2 f=58mm (Sonnar), 1:2.4 f=58mm (Heliar), 1:2.2 f=55mm (Gaussian), 1:2.8 f=105mm (Model I), 1:2.8/105 (Model II), 1:5.6/200
Tele-Takumar 1:5.6/200, 1:6.3/300
Macro-Takumar 1:4/50
Auto-Takumar 1:2.3 f=35, 1:1.8 f=55mm, 1:2.2 f=55mm
Super-TAKUMAR 1:3.5/28 (fat), 1:2/35 (Fat), 1:1.4/50 (8-element),
Super-Multi-Coated Fisheye-TAKUMAR 1:4/17
Super-Multi-Coated TAKUMAR 1:4.5/20, 1:3.5/24, 1:3.5/28, 1:2/35, 1:3.5/35, 1:1.8/85, 1:1.9/85 1:2.8/105, 1:3.5/135, 1:2.5/135 (II), 1:4/150, 1:4/200, 1:4/300, 1:4.5/500
Super-Multi-Coated Macro-TAKUMAR 1:4/50, 1:4/100
Super-Multi-Coated Bellows-TAKUMAR 1:4/100
SMC TAKUMAR 1:1.4/50, 1:1.8/55
Other lenses:
Carl Zeiss Jena Flektogon 2.4/35
SMC PENTAX ZOOM 1:3.5 35~105mm, SMC PENTAX ZOOM 1:4 45~125mm
Nikon Micro-NIKKOR-P-C Auto 1:3.5 f=55mm, NIKKOR-P Auto 105mm f/2.5 Pre-AI (Sonnar), Micro-NIKKOR 105mm 1:4 AI, NIKKOR AI-S 35-135mm f/3,5-4,5
Tamron SP 17mm f/3.5 (51B), Tamron SP 17mm f/3.5 (51BB), SP 500mm f/8 (55BB), SP 70-210mm f/3.5 (19AH)
Vivitar 100mm 1:2.8 MC 1:1 Macro Telephoto
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valjo
Joined: 10 Oct 2008
Posts: 68
Location: Bulgaria
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| Posted: Sun May 03, 2015 7:22 pm Post subject: |
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valjo wrote:
I have soaked the bottom plate in strong vinegar for 20 min.
Then brushed with a brush the affected area many times.
The green-rusty oxide stains were cleaned. The chrome coverage in this area fellt.
Then I washed off the vinegar and the dirt with water. Dreyed the plate with hot air.
Afterward I dropped plenty of brake fluid around the cap and I waited 15 minutes.
By an attempt to unscrew the cap with a large coin, that fits the slot, the battery compartment has separated himself, because the three small points of welding between the battery compartment and bottom plate did not last, because of the advanced corrosion and the finger power.
| Quote: |
| .... if it's corroded beyond repair I think I have a spare bottom plate. |
Thank you! I need another bottom plate, but i am too far - in Bulgaria.
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Canon D60
3.5/135 Jupiter 37A |
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Lloydy
Joined: 02 Sep 2009
Posts: 7768
Location: Ironbridge. UK.
Expire: 2022-01-01
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| Posted: Sun May 03, 2015 9:44 pm Post subject: |
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Lloydy wrote:
I shall look for a bottom plate, I'm sure I have one - somewhere? I shall report on my search tomorrow.
_________________
LENSES & CAMERAS FOR SALE.....
I have loads of stuff that I have to get rid of, if you see me commenting about something I have got and you want one, ask me.
My Flickr https://www.flickr.com/photos/mudplugga/
My ipernity -
http://www.ipernity.com/home/294337 |
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Lloydy
Joined: 02 Sep 2009
Posts: 7768
Location: Ironbridge. UK.
Expire: 2022-01-01
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| Posted: Sun May 03, 2015 10:13 pm Post subject: |
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Lloydy wrote:
I found it, it's in good condition. PM your address and it's yours for postage.
_________________
LENSES & CAMERAS FOR SALE.....
I have loads of stuff that I have to get rid of, if you see me commenting about something I have got and you want one, ask me.
My Flickr https://www.flickr.com/photos/mudplugga/
My ipernity -
http://www.ipernity.com/home/294337 |
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philslizzy
Joined: 07 Aug 2012
Posts: 4749
Location: Cheshire, England
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| Posted: Sun May 03, 2015 11:42 pm Post subject: |
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philslizzy wrote:
Dave to the rescue!!
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