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FORUMS Photo Sharing & Visual Enjoyment Still Life, B/W & Experimental 
Thread started 15 Oct 2009 (Thursday) 10:31
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Welding Glass (£1/$1 ND Filter) Exposures

 
jmalonear
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Jun 09, 2012 12:09 |  #1966

Jetjoint wrote in post #14553836 (external link)
Thanks for all the comments.

Jay, I see your shot is upside down! Must be in the Northern Hemisphere :-)

Yep.....From Corning, Arkansas, USA :) Mine is up right...everyone else is upside down...lol


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ItsMike
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Jun 10, 2012 09:31 |  #1967

jmalonear wrote in post #14551804 (external link)
Filter
QUOTED IMAGE

Setup
QUOTED IMAGE


Very clever mounting system there.. I might just have to do this.. :D I used rubber bands and a Petal hood reversed..


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jmalonear
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Jun 10, 2012 13:30 |  #1968

ItsMike wrote in post #14558253 (external link)
Very clever mounting system there.. I might just have to do this.. :D I used rubber bands and a Petal hood reversed..

Thanks! make sure and NOT use super glue. A friend of mine done that and it caused a gas, or cloudy substance in between the UV filter and the welding glass.


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c2thew
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Jun 10, 2012 15:01 |  #1969

jmalonear wrote in post #14559045 (external link)
Thanks! make sure and NOT use super glue. A friend of mine done that and it caused a gas, or cloudy substance in between the UV filter and the welding glass.

I'm not sure why there would be a chemical reaction with superglue and the welding filter to cause gas to be as a by-product. When my 82mm filter comes in, I'm going to use gorilla glue to attach the filter to the cokin holder.


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SteveInNZ
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Jun 10, 2012 15:14 |  #1970

It's a super-glue thing and nothing to do with the welding glass. Super-glue releases a vapor which settles and leaves a white residue if there's nowhere for it to escape to.


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pwm2
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Jun 10, 2012 23:52 |  #1971

SteveInNZ wrote in post #14559336 (external link)
It's a super-glue thing and nothing to do with the welding glass. Super-glue releases a vapor which settles and leaves a white residue if there's nowhere for it to escape to.

Not only do cyanoacrylate glue produce fumes that reacts with moisture and fogs surfaces if not used in a well-ventilated surrounding (which the cavity between UV filter and welding glass does not form). Standard CA glue also bonds badly with glass (a light tap can break the bond), so any use on glass requires special glue with additional chemicals.


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ItsMike
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Jun 13, 2012 12:15 |  #1972

What about that Gorilla Glue stuff? I would place filter on glass and put a small bead around it.. should hold.. no?


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Virto
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Jun 13, 2012 13:30 |  #1973

ItsMike wrote in post #14573694 (external link)
What about that Gorilla Glue stuff? I would place filter on glass and put a small bead around it.. should hold.. no?

Interested to know this as well. Just ordered a 77mm ring and a piece of 10 shade from fleabay. Was planning to use the hotglue and tape method, but other inexpensive options merit investigating.


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Littlejon ­ Dsgn
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Jun 13, 2012 13:33 as a reply to  @ Virto's post |  #1974

My plan is to use a clear or white bathroom or window calking, place the ring on the glass, then place a good bead all the way around it and let cure for a couple days




  
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vislp
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Jun 13, 2012 18:08 |  #1975

Virto wrote in post #14574064 (external link)
Interested to know this as well. Just ordered a 77mm ring and a piece of 10 shade from fleabay. Was planning to use the hotglue and tape method, but other inexpensive options merit investigating.

I used clear silicone! Works perfect! Just don't use a large amount. Remember, you're talking about only thousandths of an inch gap to fill. It just takes a little to hold the glass to the ring. Make sure you put it ALL the way around, not just at certain points. After it has set up, (overnight) you can carefully use something like a pointed exacto knife to cut the excess loose and peel it away. Use a soft cotton cloth to wipe it clean, as silicone can leave an oily type residue. You only need to worry about the inside of the ring, don't worry about the outer part.

Good Luck! :)

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invicktion
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Jun 13, 2012 18:52 |  #1976

If you guys are looking for cheap UV filters to attach to the Welding Glass I would recommend getting them from this seller on ebay
http://myworld.ebay.ca​/mekingequipment/ (external link)
I bought a UV filter for my t3i kit lens (58 mm), its made from metal, there was free shipping and it was under $2.00! Can't wait to try out the long exposures!


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Littlejon ­ Dsgn
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Jun 14, 2012 10:48 as a reply to  @ invicktion's post |  #1977

I figured there was no reason to put a cheap UV in between the lens and welding glass, the welding glass will already have enough of its own issues. I just picked up a step up ring that away there is no addition IQ lost.




  
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jmalonear
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Jun 14, 2012 11:58 |  #1978

I would have done it with a Step up ring if I would have had one of those lying around. The good thing about using Hot Glue...easy to get off and do again.


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Littlejon ­ Dsgn
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Jun 14, 2012 12:01 as a reply to  @ jmalonear's post |  #1979

Yup, I was placing an Amazon order already so tossed a cheapo one in the cart and called it good.




  
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c2thew
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Jun 14, 2012 13:07 |  #1980

still waiting for my cokin holder to arrive so that I can use gorilla glue to attach the adapter to the welding glass


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Welding Glass (£1/$1 ND Filter) Exposures
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