What silicone to use For mold

[SIKAXIS]

I have been preparing to mold and cast one of my helmets and I am surprised at the prices of this stuff. I understand that smooth on products are the best but they are expensive as well. I have seen a few other silicones out there like RTV, but I wanted to know if any of you have had any success with any cheaper silicones out there. (Note: I am trying to avoid the silicone caulking technique )

 

[Gilmortar]

Honestly, they don't get much cheaper than Smooth On... there are other companies out there, with *I feel* better products, but alas, more expensive.

So in truth, your best bet is dropping the dough on some Rebound 25... the prop maker go to...

 

[PSYCHO ARMY]

That's the same that I'm going to use for my halo 4 master chief helmet. And im going to cast with smooth cast 320. I heard it has less air bubbles due to a longer pot life(10 min)

 

[Gokussj5okazu]

If you're looking for a slightly more economical silicone, and your helmet has a low number of undercuts, Mold Max is a good compromise.