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

Jetjoint wrote in post #14553836
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

jmalonear wrote in post #14551804
Filter

Setup

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

ItsMike wrote in post #14558253
Very clever mounting system there.. I might just have to do this.. 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.

jmalonear wrote in post #14559045
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.

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.

SteveInNZ wrote in post #14559336
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.

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

ItsMike wrote in post #14573694
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.

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

Virto wrote in post #14574064
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!

VisLP

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/
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!

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.

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.

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

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