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Old June 22nd, 2004, 09:55 PM   #1
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Liquid Ground Glass

Earlier today I took two pieces of picture framing glass (3 inches by 3 inches) and spaced them so that they were 1mm apart. I then glued 3 of the sides with water sealant (Amazing Goop) and let them dry for an hour. Then I diluted some sour cream in water (it was the only thing I had at my disposal at the moment to try this) and used an eyedropper to insert the liquid in between the two pieces of glass. Turning off all of the lights in the house and using an old Pentax SLR 35-80mm zoom lens (4.0 being the widest opeing) pointing at the only lit corner (this set up didn't incorporate my video camera... I just pointed the lens directly at the glass to see if I am crazy or not), I was able to get a pretty darn good image besides the small chunks of sour cream floating around in the glass (I would of course have to find another white substance to dilute with water).

Anybody else try this?
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Old June 23rd, 2004, 12:31 AM   #2
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Yes, I tried something similar with Elmer's glue (Elmer35 maybe?). It's on page 62 of the Adlu35 thread.
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Old June 23rd, 2004, 06:31 PM   #3
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he, he...

some time ago i thought about MILK, but was ashamed to say that loudly on this forum....

i thought that i'm maybe crazy... but thanks to this forum i can say that i'm not...

... well, at least not the only one who is crazy.

GG rules!!!!

filip

p.s.

can anyone tell me what is elmer's glue. i'm from poland and i do not know what this "elmer" means - how this stuff looks/works?
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Old June 23rd, 2004, 07:20 PM   #4
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"Elmer's" is a brand name for a plain, general purpose white glue used for gluing paper, wood and the like. Think of it as a much better quality "flour and water" paste.
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Old June 24th, 2004, 01:44 AM   #5
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<<<-- Originally posted by Rob Belics : "Elmer's" is a brand name for a plain, general purpose white glue ... -->>>

tanks rob
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Old June 25th, 2004, 12:02 AM   #6
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Has anyone acid etched their glass yet?
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Realism, anyway, is never exactly the same as reality, and in the cinema it is of necessity faked. -- J-L G
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Old July 1st, 2004, 08:28 AM   #7
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pump it.

Another thing to try would be a small water pump pumping the liquid.

A problem would be the thickness of the light path through the material. I'd think a thicker path would lead to a softer image.

The particle sizes though would be invisible to even a megapixel camera.

Milk, etc is a colloidal suspension of fat, sugars, and proteins. There are other materials you can make colloidal suspensions from.

For example, gold finely divided makes a red colloidal suspension, it looks like blood.

Remember when Moses ground the Golden Calf into fine powder and made the Children of Israel drink it? It's in Exodus.

I'll try to find a few alternatives that don't spoil.
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Old July 1st, 2004, 01:30 PM   #8
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What about liquid latex, applied w/ the right amount thickness?

( This can be purchased from a store like Hobby Lobby or Michael's. I used it a long time ago for making stop-motion characters. )

Maybe fill a small space between two pieces of glass with it and allow it to dry.

I wonder if the color would change over time? What about if it was sealed?
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Old July 1st, 2004, 06:44 PM   #9
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why not pour cloudy resin into thin-sheets at the opacity you want...
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Old July 2nd, 2004, 02:57 AM   #10
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Okay. Don't laugh. Promise. Okay.

On the bathroom shelf under the mirror covered in powder under an oily comb and one or two loose hairs, there was -- a red and white jar of brylcreem. I said don't laugh but it was pointless asking wasn't it. Okay let's move on.

Between two microscope slides, a large smear, - an excellent groundglass - for about ten seconds - then the water under pressure begins to coalesce into larger droplets and it all falls apart into a crocodile skin effect from there.

Sorbolene, another contender from the bathroom cabinet, fares better but the same effect occurs also air also gets entrained in the mix.

I guess the groundglass effect might be coming from there being microscopically small droplets of clear water in the white oil or whatever ( micro-lenses in effect perhaps ).

In lens manufacture, there is a glue which is used to join glass elements together for composite lenses. This glue does not harden until it is set off with ultraviolet light. If that stuff could be trained to contain an opaque ingredient, then there would be a contender for a stable grainless projection layer between two glasses. Any suggestions from the chemists out there?
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Old July 2nd, 2004, 08:51 PM   #11
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Furthur to above, Canestin ointment (for footrot and other fungus infections) works okay but has a visible grain slightly less than 5 micron AO.
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Old July 3rd, 2004, 03:32 PM   #12
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Hey Bob your like a mad scientist - whatever you do dont blow yourself up.
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Old July 3rd, 2004, 11:00 PM   #13
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I was going to make some bleached beeswax until I found out I was likely to burn the house down trying, so that one is on the back burner so to speak for some dry weather when it can be done in safety in the backyard.
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Old July 4th, 2004, 02:26 AM   #14
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It looks like the glue is a failure. The glue on the inside is gradually getting more transparent. Right now it's actually very good because it has no grain and high light transmission, but it has a strange effect where out of focus objects have a halo arond them (kind of like a soft-focus filter, but only on things that are blurred). It's actually a very unique effect, but unfortunetly not suitable for regular filming.
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Old July 4th, 2004, 10:57 AM   #15
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good point... someone should develop a behind the lens filter set with some of these ointments and such.
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