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Unread 07-18-2018, 05:26 PM   #1
Akatsura
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Need tips for liquid in props

I am working on a casual gilgamesh cosplay and trying to make a prop wine glass. I purchased two plastic wine glasses from a party store and I am going to try to deconstruct them and make a wine glass with a double layer of plastic with "wine" sealed in between the layers to make it look like the glass is full without any risk of spilling or leaking. There are many novelty beer mugs and thermoses that do this as well.

My plan is to pour a small amount of water with red food coloring into the first glass, then nest the second cup into the first. I will place a small piece of plastic in the bottom of the first cup to give the liquid some space to rest between the layers. I then plan to seal the two rims together with a hot glue gun so that there is no leaking or moving of the two cups.

My main question is, will red food coloring in water start to go bad or change color over time? Will red food coloring start to stain the plastic and give the whole prop a pink look eventually?

I would also appreciate any and all tips or warnings regarding this prop. Thank you everyone.

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Unread 07-19-2018, 01:22 AM   #2
Midnight Dawn
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1. It won't go bad. But over time the color might fade due to degradation by either sun light or heat.

2. Hard to say depending on the kind of dye you use. But if kept in ideal conditions it should be fine.

I would suggest using either acylic cement to fuse the plastic or a silicone based adhesive to prevent any form of leakage.
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Unread 07-19-2018, 06:30 AM   #3
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Straight red food coloring won't really look like wine. I'd use watercolor paint in water, dipping color in until it looks good.

When left on a shelf for a year between cons, either mix will separate. You can resolve this by shaking it up from time to time.

You may need a different vessel for the interior of the glass. If the ones you bought are the kind I'm thinking of, one won't fit inside the other at all. The disposable wine glasses are flimsy and thin, but may work perfectly for your interior holding space. Plus the removable bottoms may be just the piece you need to seal up the top edge.
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Unread 07-19-2018, 10:42 AM   #4
nathancarter
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Quote:
Originally Posted by Midnight Dawn View Post
I would suggest using either acylic cement to fuse the plastic or a silicone based adhesive to prevent any form of leakage.
Seconding this. Hot glue is inadequate.
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Unread 08-01-2018, 12:10 PM   #5
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Thanks a lot for all the advice. This will definitely help. =]
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Unread 10-11-2018, 07:54 PM   #6
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Here is an update on this project in hopes of getting any more possible advice. The Nesting wine glasses failed. I am now using a Tervis brand wine glass. I have drilled a hole into the bottom and will fill it then seal it again.

I thought of the idea of using red wine vinegar as my faux wine. Does anyone know if this would be a good idea? Will the red vinegar stain the plastic or start to get cloudy, etc? Thanks again to all for the help.
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Unread 10-12-2018, 02:59 PM   #7
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That might be a good option. Vinegar goes cloudy when left in the sun for long periods. Dunno about staining.
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