Re: Cleanin non-removable screens
13 Dec 01, Peifer, William <[EMAIL PROTECTED]> wrote:
>
> Mark Roberts wrote:
>> [Answers to Levil's cleaning questions, snipped]
>
> Hi Mark & LeviL,
>
(Snip)...
> I've had great luck getting all sorts of schmutz off of all sorts of
> surfaces using various brands of waterless hand soap
(Snip)...
> Another thing I've used to remove adhesives and resins from
> glass is WD-40. Ever given this a shot? Of course, you'd
> want to take the dirty part out of the camera for this kind of a
> cleaning, and you'd still need to wash the part afterwards with
> soap and water, and/or Windex. Seems like either of these
> might be good for cleaning off rotting foam or adhesive...
(Snip)...
Bill,
Waterless hand cleaners (Goop, Go-jo, Fast Orange, Citrus Orange, etc...)
are very good at removing grease and goop. However, they are "very messy"
in their own way. Because of their messy nature, they would seem rather
inappropriate for use inside a camera (ie, Subject: Re: Cleanin
non-removable screens). If you do use a waterless cleaner on a screen
outside the camera, be certain the cleaner does not contain pumice. Those
cleaners are commonly available with and without pumice.
WD-40 works well for cleaning off adhesive residue. However, it does
require more rubbing than most true solvents and therefore may not be best
for cleaning delicate parts like focusing screens (just guessing, I haven't
tried it). WD-40 also leaves an oily residue that must be cleaned off, so
it's not a one-step cleaner. I would think it would require 3-steps: 1)
clean with WD-40,2) clean with naphtha,3) clean with Lens Cleaner
(first choice... Windex/ Sparkle as second choice). Is Sparkle still
around? I always found that Sparkle gave better streak-free results than
Windex.
Magic GooGone (grocery, drug and hardware stores in the USA) is made for
removing adhesive residue (stickers, labels, tape, gum, tar, crayon, etc)
and does a great job with little rubbing while leaving minimal residue. It
works well for cleaning the sticky mess left by deteriorating light seals.
It doesn't hurt painted surfaces. It does have a light oily feel when
poured on your finger ("contains petroleum distillates..."), but seems to
leave a squeeky clean surface when it's dried. A follow-up cleaning with
Naphtha will remove any lingering trace. Goo Gone does leave a citrus (?)
smell.
Naphtha is a good, general purpose, no residue solvent for use inside camera
equipment. It's sold commercially as lighter fluid (the old liquid-fueled
lighters like Zippo... not butane lighters), and handwarmer fuel. Common
trade names around here are Ronco or Zippo lighter fluid and Jon-e (like
Johnnie) handwarmer fuel. Lighter fluid can be purchased where tobacco
products are sold. Handwarmer fuel can be purchased in hardware and
sporting goods/ hunting supply stores. Naphtha is also the solvent used to
dry-clean clothing.
Naphtha is the only solvent I use inside a camera body, since it evaporates
quickly and leaves no residue of it's own. Just be careful that you don't
wash whatever goop you were trying to remove into other areas of the camera.
Regardless of what liquid you use, always apply it to a cloth or cotton
swap first, then transfer it to the part to be cleaned. Avoid pouring a
liquid directly on any surface inside a camera.
Regards,
Tim Engel
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Re: Cleanin non-removable screens
There is actually a screw that holds the frame in place under the foam mirror bumper. Lots-o-luck finding that SE screen, if you find a source for them let me know, I would like a couple myself Ciao, graywolf - Original Message - From: LeviL <[EMAIL PROTECTED]> To: <[EMAIL PROTECTED]> Sent: Thursday, December 13, 2001 12:25 AM Subject: Re: Cleanin non-removable screens > Hello Mark > > Please elaborate on this a little. What made you come to this conclusion? > Which part of the cleaning process did I kill the screen with. I was in > fact fairly confident that if I could get the darn thing out of there I > could clean it, but I wasn't sure so I prepaired for the worst. :)) > > thx > > Also, if this is the case, does anyone know how I can get an ME Super SE > screen? (the one with the diagonal split prism) > > L > > > You're going to have to replace the screen, I'm afraid. > > > > - -- > > Mark Roberts > > www.robertstech.com > > - - > > Levente -Levi- Littvay > University of Nebraska-Lincoln > -- > PGP public key: http://www.kign.org/levilpub.asc > Key fingerprint: 8BD8 3CE7 FB1D 625F F268 BFCE 417A C20C 92BF 6225 > -- > Download free PGP e-mail security software: http://www.pgpi.org/ > - > This message is from the Pentax-Discuss Mail List. To unsubscribe, > go to http://www.pdml.net and follow the directions. Don't forget to > visit the Pentax Users' Gallery at http://pug.komkon.org . - This message is from the Pentax-Discuss Mail List. To unsubscribe, go to http://www.pdml.net and follow the directions. Don't forget to visit the Pentax Users' Gallery at http://pug.komkon.org .
Re: Cleanin non-removable screens
"LeviL" <[EMAIL PROTECTED]> wrote: >Hello Mark > >Please elaborate on this a little. What made you come to this conclusion? Experience :( I've did that myself to a focusing screen once. >Which part of the cleaning process did I kill the screen with. I was in >fact fairly confident that if I could get the darn thing out of there I >could clean it, but I wasn't sure so I prepaired for the worst. :)) Perhaps you can clean it if you get it out, but every focusing screen I've seen that looked as you describe was beyond my ability to clean up. If you find something that works I'd like to hear about it, though. Could be useful in the future. >Also, if this is the case, does anyone know how I can get an ME Super SE >screen? (the one with the diagonal split prism) I buy "organ donor" cameras on eBay. -- Mark Roberts www.robertstech.com - This message is from the Pentax-Discuss Mail List. To unsubscribe, go to http://www.pdml.net and follow the directions. Don't forget to visit the Pentax Users' Gallery at http://pug.komkon.org .
Re: Cleanin non-removable screens
Hello Mark Please elaborate on this a little. What made you come to this conclusion? Which part of the cleaning process did I kill the screen with. I was in fact fairly confident that if I could get the darn thing out of there I could clean it, but I wasn't sure so I prepaired for the worst. :)) thx Also, if this is the case, does anyone know how I can get an ME Super SE screen? (the one with the diagonal split prism) L > You're going to have to replace the screen, I'm afraid. > > - -- > Mark Roberts > www.robertstech.com > - - Levente -Levi- Littvay University of Nebraska-Lincoln -- PGP public key: http://www.kign.org/levilpub.asc Key fingerprint: 8BD8 3CE7 FB1D 625F F268 BFCE 417A C20C 92BF 6225 -- Download free PGP e-mail security software: http://www.pgpi.org/ - This message is from the Pentax-Discuss Mail List. To unsubscribe, go to http://www.pdml.net and follow the directions. Don't forget to visit the Pentax Users' Gallery at http://pug.komkon.org .
