Silicone mold casting

silicone mold casting

 

Five tips for casting resin in silicone molds

by Tania of House of Molds

1. Wear gloves when handling molds and pouring resin.  Not only do they keep you safe from resin, but they also prevent fingerprints inside the molds.  Sometimes these fingerprints can show up on your resin castings.  Note:  The more glossy the mold surface, the easier it is to leave a visible fingerprint on the mold.

2.  Be sure your mold is clean before casting.  You do not want any dust or resin from a previous casting inside the cavity.  These will cast onto your piece.

3.  Take care when positioning your mold.  If your casting table has a rough surface or a non level top, your resin piece could be uneven, despite using a perfect mold and top quality resin.  You can best prepare a crafting surface for your molds by using a bubble level to check your table levelness.

4.  Do not overfill the mold, as to prevent a lot of excess sanding once your piece is finished.  In case of resin voids, you can make a second resin pouring anytime by following these rules

*make it when your resin is still at gel stage

*Use the same brand of resin

*pour the next layer before demolding

5.  For help when demolding, gently press the mold then add a drop of soapy water inside.  Press again and push the object out from the bottom of the mold.  This will make resin extraction from the mold easy and quick.

What other questions do you have about silicone mold casting?

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11 Comments

Jim Wilson

Hi, I would like a teardrop shaped mold to produce a pendant.
I wish to embed a piece of exotic wood in the teardrop.
How can I make or find a mold that will not have a seam as when 2 halves are joined?

Do you have such a mold I can buy?
Thanks
Jim

Reply
Jim Wilson

Hi Katherine;
A 3D teardrop would be first choice.

I see how a flat backed pendant could be a one piece mold, easier for pouring?

Will a wooden artifact float in the resin, or stay where it is placed?

Thanks
Jim

Reply
Ronald Ainaire

That depends on the weight of the wood. I find it best to weight the pc of wood down. use a toothpick with some weight on the outside of the mold.

Reply
Fran Hayworth

Could you tell me where I can buy silicone molds for resin jewellery (bracelet in particular) in South Africa?

Reply
Galen

I had a very difficult time getting a pendant out of a silicon tubular mold. Is there an easy way to get the pice out? The mold was a half inch in diameter and 2 inches long. I embedded some Austrian crystals and its was beautiful but getting it out was incredibly tough and it broke leaving half inside. I ended up flipping the mold inside out but now have fingerprints inside. How do I get those out?

Reply
Katherine Swift

Sometimes it will work where you can introduce a drop of dish soap in between the casting and the mold to help you get it out. Try some denatured alcohol to remove the fingerprints.

Reply
Laska

Hello..i am searching forum those beautifull silver end with rings on it…to adjust to a necklace . Where van i buy those??

Reply
Ashley

What is the best way to insert a finding when using a mold? Particularly the screw in one? I would think it would be hard to get it to stay standing straight if you put it in before the resin cured

Reply
Katherine Swift

I’m not sure I understand your question. You want to insert a screw in a resin mold?

Reply

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