Runboard.com
You're welcome.

runboard.com       Register for a free global account (learn about it) | Log in: (), globally (lost password?)

 
LemApp Profile
Live feed
Blog
Friends
Miscellaneous info

Apprentice

Registered: 02-2004
Location: Hampton, VA
Posts: 168
Reply | Quote
Mold Release Advice - Plaster & Latex


Hey Everyone,

   I have a plaster (Ultra Cal 30) mold that continually sticks to the latex. My latest attempt involded liquid soap mixture based on flaxseed oil. Though this is mainly for plaster on plaster.

   Can someone provide some guidance? It is frustating having the latex casting remain attached to the mold.

   Thanks :pray

LemApp
 

Last edited by Deadly Lemur, 3/19/2006, 12:22 am


---
LemApp

[gifted, though challenged]
1/10/2005, 8:49 am Link to this post Send Email to LemApp   Send PM to LemApp
 
LUDAKRIS Profile
Live feed
Blog
Friends
Miscellaneous info

Caped Crusader

Registered: 10-2004
Location: Right here !!!
Posts: 1906
Reply | Quote
Re: Seeking Mold Release advise - Plaster & Latex


im not sure but i dont think you should need any mold releasent on it have coated the plaster with any thing that might make it stick like that?

---
EMAIL: kris@hellskitchencc.com

http://www.myspace.com/_hells_kitchen

www.hellskitchencc.com

CHECK OUT OUR NEW WEB SITE
1/10/2005, 10:07 am Link to this post Send PM to LUDAKRIS
 
DAVIDYR1 Profile
Live feed
Blog
Friends
Miscellaneous info

Caped Crusader

Registered: 02-2004
Location: UD Replicas
Posts: 3406
Reply | Quote
Re: Seeking Mold Release advise - Plaster & Latex


No, you shouldnt need a mold release with stone molds however there are cases where for different reasons the latex will enter the pores of the stone mold to the point of latching onto it tightly making it very difficult to remove. Which seems to be the case with yours.

In this case you still dont want to use any mold release but you could spray the inside of your mold with light mists of water.

Spray it 3 or 4 times...dab out any pooling of water then slush your latex. That'll give the mold a moisture surface to absorb before you cast your latex into it thus resulting in less grip on your own latex.

Never use soap or oils...the latex will separate from the mold in the case of soap while it's curing causing horribly warped casts...and any oils will prevent the moisture from the latex to be absorbed into your mold....it'll almost be like trying to cast latex into silicone.

Hope this helps a bit.

David

---

1/10/2005, 11:57 am Link to this post  
 
LemApp Profile
Live feed
Blog
Friends
Miscellaneous info

Apprentice

Registered: 02-2004
Location: Hampton, VA
Posts: 168
Reply | Quote
Re: Seeking Mold Release advise - Plaster & Latex


THANKS!!!!

   I got wrapped up into searching for a mold release. Now you've reminded me of the simply power of water.



---
LemApp

[gifted, though challenged]
1/10/2005, 1:44 pm Link to this post Send Email to LemApp   Send PM to LemApp
 
DAVIDYR1 Profile
Live feed
Blog
Friends
Miscellaneous info

Caped Crusader

Registered: 02-2004
Location: UD Replicas
Posts: 3406
Reply | Quote
Re: Seeking Mold Release advise - Plaster & Latex


No Problem. :)

David

---

1/10/2005, 2:00 pm Link to this post  
 
EchoSix Profile
Live feed
Blog
Friends
Miscellaneous info

Caped Crusader

Registered: 08-2004
Location: Occupying Gotham
Posts: 9853
Reply | Quote
Re: Seeking Mold Release advise - Plaster & Latex


Doesn't oil break down latex rubber? Kind of like vaseline breaks down condoms?

I think vaseline is oil based, rather than water based. That's why there's KY jelly...

And I think I'm opening the door to too many comments to be thrown my way... :)

---
"An error doesn't become a mistake, until you refuse to correct it."

1/10/2005, 3:46 pm Link to this post  
 


Add a reply





You are not logged in (login)