How to cast thin armor pieces?

[Goontahman]

I've recently gotten into making silicone molds to make more Colonial Marine armor to do a squad build, and the only part I've mastered now is the ab pad/plate since it's a thick and simple piece. Does anyone have any advice or tips on how to get good casts of such thin pieces of armor? The pieces are only about 1/16" thick and impossible to get out of the mold successfully! Can someone help me out on how to cast them?
Thank you!

 

[robbiethepainter]

Do you have a pic of your mold? I might be able to help if I could see it.

 

[Goontahman]

I don't actually, essentially I just used a dab of hot glue on the bottom, standing the chest piece vertically, and poured the silicone all around it. I was wondering if it would be better if I glued it to a small part of a dowel rod inside the box so that there is a hole for the resin. My main problem is trying to find the best way to open the mold. I was thinking I might have to do a two-part mold, which I haven't done before but it looks pretty straightforward!

 

[robbiethepainter]

That is my main way of molding for this business. Are you cutting the sides to open it or are you just trying to pull the piece out?

This is the process I use, but this isnt me.

https://youtu.be/ciFnhRk5p_Q

 

[Goontahman]

I have to cut it to open it, because the plastic the armor is made of is pretty brittle. The ab plate I could pretty much pull out, but I think I will have to cut around it and hope for the best.

 

[Goontahman]

Also, thank you for the video! That seems pretty simple actually. I think My problem was that I used too big of a box so it was a lot of digging around to find the plate itself.