silicon mold of plasticine object

[pommeverte]

Hey guys,

I'm a total newbie so this might be a really stupid question but here I go anyway.
I'm wanting to make a male/female silicon mold of a plasticine sculpted object.

Where I get confused is that all I seem to be finding online regarding male/female mold making is that you should place the sculpted item into a layer of plasticine (so only half of it gets molded), and then repeat with the other face.
My item being already made of plasticine I'm worried it will fuse with this layer and screw up my model.

Any help/insight would be greatly appreciated.

Thanks guys.

 

[StuntmanMike]

Hello

If you have the chance to place your sculpture in a "hovering" position, the first half of the mold could be poured in slowly from below. But that depends on how the sculpture is shaped. You don´t want to have any trapped air that would cause bubbles in your mold surface. A picture of the sculpture would be good to find out the best way to make the molds.

Best regards
Kevin

 

[pommeverte]

Hello

If you have the chance to place your sculpture in a "hovering" position, the first half of the mold could be poured in slowly from below. But that depends on how the sculpture is shaped. You don´t want to have any trapped air that would cause bubbles in your mold surface. A picture of the sculpture would be good to find out the best way to make the molds.

Best regards
Kevin

Hi Mike,

Thanks for taking the time to reply. I'm afraid hovering would be quite difficult. I've got a couple pieces to mold and that could work for the first but the second is a quadriped with a big head so that's going to be a bit more complicated.

 

[Fireball Joe]

You can probably make a brush-on mold of your object. Look on the Smooth-On website (Smooth-On, Inc. - Mold Making & Casting Materials Rubber, Plastic, Lifecasting, and More) in the tutorial section and you should be able to find information on the process. You can also find videos at YouTube by searching for "silicone brush mold."