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damianpadden Profile
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Apprentice

Registered: 09-2004
Posts: 138
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Preserving a Sculpt & Applying Plaster


Hi,

Did a test over the weekend on my Begins Cowl sculpt with applying plaster to create the mold. As this was my first ever attempt I simply applied a layer of plaster to the back of the neck to test it. I had about an inch think coat of plaster on the neck and left it to set for about 2 hours. It was rock hard when I went back and I tried to remove it but it would not move. I have to really ply it of the sculpt and it remove alot of the clay (wax based) from my sculpt. I know that the plaster will heat up the clay and it will make it soft.

I need to know how I can prevent the sculpt from being effected. Can i spray it with a sealer to harden the clay for good then apply the plaster.

I am really revous that all the time I have spent creating the sculpt will be wasted. I just want to make sure I have a sculpt left incase when I make the mold and it does not produce what I want I can make changes to the sculpt and then repeat the process.

help help help

Damo


Last edited by Deadly Lemur, 3/20/2006, 10:33 pm
2/14/2005, 4:09 am Link to this post Send Email to damianpadden   Send PM to damianpadden
 
pjwares Profile
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Caped Crusader

Registered: 02-2004
Posts: 1077
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Re: help with applying plaster


There is an acrylic sealant that I get from Tiranti that does the job a treat. I'm at work now, but when I get home I'll find the name of it for you.

Did you reinforce the plaster with some kind of burlap?

---
"Excuse me.... ever danced with the devil in the pale moonlight?"


2/14/2005, 4:12 am Link to this post Send Email to pjwares   Send PM to pjwares
 
damianpadden Profile
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Apprentice

Registered: 09-2004
Posts: 138
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Re: help with applying plaster


burlap??
2/14/2005, 4:14 am Link to this post Send Email to damianpadden   Send PM to damianpadden
 
pjwares Profile
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Caped Crusader

Registered: 02-2004
Posts: 1077
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Re: help with applying plaster


The stuff potato sacks are made from. I find it hard to get hold off so I use Hessian Scrim from South Western Industrial Plasters. It works a treat.

Also Damo, what did you sculpt the cowl onto, was it a polystyrene head?

---
"Excuse me.... ever danced with the devil in the pale moonlight?"


2/14/2005, 4:39 am Link to this post Send Email to pjwares   Send PM to pjwares
 
damianpadden Profile
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Apprentice

Registered: 09-2004
Posts: 138
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Re: help with applying plaster


yep its a poly head

Damo
2/14/2005, 4:56 am Link to this post Send Email to damianpadden   Send PM to damianpadden
 
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Caped Crusader

Registered: 02-2004
Posts: 1077
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Re: help with applying plaster


So you have the option of making a one-piece mould rather than a two piece, which would eliminate seam lines in the final mask.

All that means, is that instead of making the the mould in two-pieces, you'll cover the whole sculpt in plaster/scrim. Then once it's set, take a gas torch and melt the poly head (make sure you do this outside as the poly head will give off all sorts of nasty fumes when melting). Then all you have to do is removed the clay. There's a little more to it, but maybe one of the boards experts can jump in and tell you about it.

However, if you want to try and preserve the original sculpt, you'll have to do a two-piece mould.

If you need any help, shoot me an email mate.

Last edited by pjwares, 2/14/2005, 5:07 am


---
"Excuse me.... ever danced with the devil in the pale moonlight?"


2/14/2005, 5:01 am Link to this post Send Email to pjwares   Send PM to pjwares
 
damianpadden Profile
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Apprentice

Registered: 09-2004
Posts: 138
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Re: help with applying plaster


i think i will go for the two part mold as I want to keep the sculpt, first attemp and all. I will have a scan of tirantis web site to find the sealer and go down that route.

Cheers

Damo
2/14/2005, 5:08 am Link to this post Send Email to damianpadden   Send PM to damianpadden
 
pjwares Profile
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Caped Crusader

Registered: 02-2004
Posts: 1077
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Re: help with applying plaster


This is the stuff buddy - Filmo’ront Acrylic Sealer 500ml

Just found it on the site. Run a search, as I can't find it under any specific category.

---
"Excuse me.... ever danced with the devil in the pale moonlight?"


2/14/2005, 5:15 am Link to this post Send Email to pjwares   Send PM to pjwares
 
damianpadden Profile
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Apprentice

Registered: 09-2004
Posts: 138
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Re: help with applying plaster


will pick some up from their shop this afternoon

cheers

Damo
2/14/2005, 5:25 am Link to this post Send Email to damianpadden   Send PM to damianpadden
 
pjwares Profile
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Caped Crusader

Registered: 02-2004
Posts: 1077
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Re: help with applying plaster


Glad to help bro, I'm looking forward to seeing the finished article.

---
"Excuse me.... ever danced with the devil in the pale moonlight?"


2/14/2005, 5:27 am Link to this post Send Email to pjwares   Send PM to pjwares
 


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