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Author Topic: How to make geletine for prosthetic appliances  (Read 9606 times)

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Steve-O

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How to make geletine for prosthetic appliances
« on: March 29, 2010, 07:44:12 PM »
.Gelatine Formula - For a large Pyrex bowl

Ingredients:

700g Glycerine
525g Sorbitol Solution
210g Gelatine Powder
2g Zinc Oxide Powder

Process:

Mix liquids together in one bowl.  Mix powders together in another bowl. 

Mix powders with a small amount of the liquid first, then when mixed, add the rest of the liquid, this will help it disperse easier.

Add the rest of the liquids and heat in a microwave for 2mins at a time stirring between heating until the crystals in the powder have gone. 

Colour using gelatine pigments, oil powder, food colouring.

Pour out into an ice cube tray, when set store in sealed bag/container.

Reheat to use, careful not to over cook

Tips:

Wear gloves, it will burn your skin when hot.

Best to make small less colour-concentrated batches of colour by mixing approximately a half a teaspoon of the colour with about half a cup of gelatine, make a red, blue, yellow, brown etc, then when set, tear off little pieces and use these to carefully and slowly add to your heated gelatine as you need to, it will disperse better than adding raw pigment and is easier to control the colour.

Do not over cook your gelatine, this is when it boils and bubbles, it will make the gelatine weaker and darker.

Pre heat your moulds to allow the gelatine to flow when casting.

When cast, wait for the gelatine to begin to set and then put in a freezer to speed up the setting process.
"I ain't got no beef with east coast, I think it's just being hyped up." Ice T (musician)

Lost in the Orient

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Re: How to make geletine for prosthetic appliances
« Reply #1 on: April 12, 2010, 07:27:52 AM »
This is my recipe:

100g Glycerine
75g Sorbitol
20-30g 300 bloom gelatin (20-22g for appliances and more for fake body parts)
a pinch of blue flocking
a pinch of green flocking
3 pinches of red flocking
1g of liquid make-up for color
1/2g zinc oxide

I mix everything and let it proof in a warm room, covered in aluminum foil for 1-2 days before melting it and adding to my molds.
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cristophe p

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Re: How to make geletine for prosthetic appliances
« Reply #2 on: May 07, 2010, 07:29:22 PM »
 ;)  thanks guys !

Jack Myers

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Re: How to make geletine for prosthetic appliances
« Reply #3 on: September 22, 2010, 02:29:24 PM »
Does any body know where you can get sorbitol in the uk in a hurry?? Ive been majorly let down buy a supplier and need to get this stuff made by saturday.

Any help would be GREATLY appreciated! :)
Failure is a consequence of giving up

Lost in the Orient

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Re: How to make geletine for prosthetic appliances
« Reply #4 on: September 22, 2010, 03:30:01 PM »
I imagine Mouldlife has it.  This might get more views in the make-up fx section rather than the tutorials section.
The journey of a thousand miles begins with a single step.

Gary_b

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Re: How to make geletine for prosthetic appliances
« Reply #5 on: November 05, 2010, 02:51:46 PM »
Am I right in thinking I can use Honey in place of Sorbitol?

Lost in the Orient

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Re: How to make geletine for prosthetic appliances
« Reply #6 on: November 05, 2010, 03:28:24 PM »
No, the end product will not be stable.  Hoiney is natural and not synthesized so it is not the same from  batch to batch
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Gary_b

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Re: How to make geletine for prosthetic appliances
« Reply #7 on: November 05, 2010, 03:50:44 PM »
oh. I was going to use these instructions http://www.instructables.com/id/Using-gelatin-for-moulds-and-prosthetics/#step1 for my gelitin you see as it seems quite cheap and I don't need anything on special order. What do you reckon?

Lost in the Orient

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Re: How to make geletine for prosthetic appliances
« Reply #8 on: November 05, 2010, 04:25:44 PM »
Not sure about that.  The Instuctables and Backyard FX videos are cool and all but they are bandaid solutions.  They would not work in a real high strain high demand situation like a film or TV show.

The other factor is sorbitol is used to stiffen and stabilize the gelatin, where as honey doesn't function that way.  In a sense the honey almost seems pointless.  Glycerin instead of water, keeps the gelatin from shrinking and hardening.  Dunno man, you can try it.  Also store bough gelatin is like 75-150 bloom, and you really want 300 bloom gelatin for appliances.  Yields a stronger nicer product.  I use supermarket gelatin for construction 3rd degree burns and a few other odds and ends but that is about it.  The honey might actually make your gelatin sticky.  Just a thought. 

That said, we all need to start somewhere and this may give you a feel for some of the chemistry.  Give it a go.  What do you have to lose, eh?
The journey of a thousand miles begins with a single step.

Alain

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Re: How to make geletine for prosthetic appliances
« Reply #9 on: November 05, 2010, 04:41:07 PM »
Mike is right, Gary, definitely right : experience is only acquired by… experience, trials and errors.  You can put a foot in the field that way or another, no matter, as long as you take notes of you deeds and report what the results are. If you can reproduce an experience several times and get the same good result, then it's OK.

But in pro land, one must behave safe and not play with actor's skin (they have no easy replacement, have they ?…), and bending to tested formulas is safer and time-saving.

Let us know what turns out of you honey formula…

Good luck… heu… break your leg, sorry…
Makeup is a trade that needs serious, time, practice and patience. That's why I love it since the beginning…
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Gary_b

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Re: How to make geletine for prosthetic appliances
« Reply #10 on: November 05, 2010, 09:41:33 PM »
Thanks for the replies guys :)

I'll give it a go, like you said I've nothing to loose, plus it may give me an idea of how to work with gelatin without burning too much money.

I'll post up my results regardless of the out come :)
« Last Edit: November 05, 2010, 09:47:07 PM by Gary_b »

Gorey Corey

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Re: How to make geletine for prosthetic appliances
« Reply #11 on: January 29, 2011, 11:31:36 PM »
Can anyone give me the US conversion measurements? I always seem to encounter this issue, and I noticed I have 3 different recipes wrote down + 2 different one's from books. The biggest hurdle I always seem to run into is the amount of gelatin to use. I use "KNOX" so it comes in packages. This last batch of gelatin I made, in my opinion, is too thick. I followed instructions from one of my books. So I'd like to try the recipes listed if you can let me know what the measure out to in the US, plus let me know how many packages to use. I should go buy a dang scale...

Lost in the Orient

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Re: How to make geletine for prosthetic appliances
« Reply #12 on: January 30, 2011, 05:03:07 AM »
I think one of the issues you are having is Knox gelatin is not good for prosthetics.  The bloom rate is too low.  You want 300 bloom gelatin from an effects supplier.
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Gorey Corey

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Re: How to make geletine for prosthetic appliances
« Reply #13 on: January 30, 2011, 08:19:22 AM »
Maybe, but I've gotten it to work for me before.

chaos

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Re: How to make geletine for prosthetic appliances
« Reply #14 on: September 30, 2011, 02:47:11 PM »
I use Sorbitol powder- cause in the past I had  problems with the solution.. after some time it became yellowisch- well I like a little yellow for skin- but this was too much.  Does anyone else share this experience with the solution?
I use a hazardous substance cabinet  to store those things. So it is dark, temperature is regulated....

Lost in the Orient

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Re: How to make geletine for prosthetic appliances
« Reply #15 on: September 30, 2011, 06:10:30 PM »
I store my liquid sorbitol at room temperature on a shelf in a plastic bottle, and after 3 years it is still water clear.
The journey of a thousand miles begins with a single step.

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